31113000651 has 32 divisors (see below), whose sum is σ = 42407008000. Its totient is φ = 20284836480.

The previous prime is 31113000647. The next prime is 31113000683. The reversal of 31113000651 is 15600031113.

It is not a de Polignac number, because 31113000651 - 2² = 31113000647 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31113000691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39533280 + ... + 39534066.

It is an arithmetic number, because the mean of its divisors is an integer number (1325219000).

Almost surely, 2^31113000651 is an apocalyptic number.

31113000651 is the 144021-st pentagonal number.

31113000651 is a deficient number, since it is larger than the sum of its proper divisors (11294007349).

31113000651 is a wasteful number, since it uses less digits than its factorization.

31113000651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1819.

The product of its (nonzero) digits is 270, while the sum is 21.

Adding to 31113000651 its reverse (15600031113), we get a palindrome (46713031764).

The spelling of 31113000651 in words is "thirty-one billion, one hundred thirteen million, six hundred fifty-one", and thus it is an aban number.