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2031325140 = 2235132604263
BaseRepresentation
bin111100100010011…
…1000111111010100
312020120022000020110
41321010320333110
513130004401030
6533322203020
7101223656505
oct17104707724
95216260213
102031325140
119526a2709
12488353470
13264ac4550
14153ad0bac
15bd4ee1b0
hex79138fd4

2031325140 has 48 divisors (see below), whose sum is σ = 6125228928. Its totient is φ = 500018304.

The previous prime is 2031325139. The next prime is 2031325147. The reversal of 2031325140 is 415231302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2031325147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1301352 + ... + 1302911.

It is an arithmetic number, because the mean of its divisors is an integer number (127608936).

Almost surely, 22031325140 is an apocalyptic number.

2031325140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2031325140 is an abundant number, since it is smaller than the sum of its proper divisors (4093903788).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2031325140 is a wasteful number, since it uses less digits than its factorization.

2031325140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2604288 (or 2604286 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 2031325140 is about 45070.2245390457. The cubic root of 2031325140 is about 1266.4648707463.

Adding to 2031325140 its reverse (415231302), we get a palindrome (2446556442).

The spelling of 2031325140 in words is "two billion, thirty-one million, three hundred twenty-five thousand, one hundred forty".

Divisors: 1 2 3 4 5 6 10 12 13 15 20 26 30 39 52 60 65 78 130 156 195 260 390 780 2604263 5208526 7812789 10417052 13021315 15625578 26042630 31251156 33855419 39063945 52085260 67710838 78127890 101566257 135421676 156255780 169277095 203132514 338554190 406265028 507831285 677108380 1015662570 2031325140