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2931610345 = 510142113789
BaseRepresentation
bin1010111010111100…
…1101001011101001
321120022100020100221
42232233031023221
522000443012340
61202522330041
7132435163636
oct25657151351
97508306327
102931610345
1112748aa274
12699959921
1337948a9a1
141db4c318d
1512258544a
hexaebcd2e9

2931610345 has 16 divisors (see below), whose sum is σ = 3561460560. Its totient is φ = 2316384000.

The previous prime is 2931610343. The next prime is 2931610361. The reversal of 2931610345 is 5430161392.

It can be written as a sum of positive squares in 8 ways, for example, as 85174441 + 2846435904 = 9229^2 + 53352^2 .

It is not a de Polignac number, because 2931610345 - 21 = 2931610343 is a prime.

It is a super-2 number, since 2×29316103452 = 17188678429822038050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2931610345.

It is not an unprimeable number, because it can be changed into a prime (2931610343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 205711 + ... + 219499.

It is an arithmetic number, because the mean of its divisors is an integer number (222591285).

Almost surely, 22931610345 is an apocalyptic number.

It is an amenable number.

2931610345 is a deficient number, since it is larger than the sum of its proper divisors (629850215).

2931610345 is a wasteful number, since it uses less digits than its factorization.

2931610345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14316.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 2931610345 is about 54144.3473042200. The cubic root of 2931610345 is about 1431.2057812086.

The spelling of 2931610345 in words is "two billion, nine hundred thirty-one million, six hundred ten thousand, three hundred forty-five".

Divisors: 1 5 101 421 505 2105 13789 42521 68945 212605 1392689 5805169 6963445 29025845 586322069 2931610345