Search a number
-
+
2002011031 = 3164581001
BaseRepresentation
bin111011101010100…
…0100001110010111
312011112010200211201
41313111010032113
513100003323111
6530354013331
7100416545566
oct16725041627
95145120751
102002011031
119380a0579
1247a577247
1325b9cc817
1414dc5dbdd
15bab5d6c1
hex77544397

2002011031 has 4 divisors (see below), whose sum is σ = 2066592064. Its totient is φ = 1937430000.

The previous prime is 2002011007. The next prime is 2002011041. The reversal of 2002011031 is 1301102002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2002011031 - 213 = 2002002839 is a prime.

It is a super-2 number, since 2×20020110312 = 8016096336491365922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2002010999 and 2002011017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002011041) 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 3 ways as a sum of consecutive naturals, for example, 32290470 + ... + 32290531.

It is an arithmetic number, because the mean of its divisors is an integer number (516648016).

Almost surely, 22002011031 is an apocalyptic number.

2002011031 is a deficient number, since it is larger than the sum of its proper divisors (64581033).

2002011031 is an equidigital number, since it uses as much as digits as its factorization.

2002011031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64581032.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 2002011031 is about 44743.8379109347. The cubic root of 2002011031 is about 1260.3431984823.

Adding to 2002011031 its reverse (1301102002), we get a palindrome (3303113033).

The spelling of 2002011031 in words is "two billion, two million, eleven thousand, thirty-one".

Divisors: 1 31 64581001 2002011031