31113032947 has 2 divisors, whose sum is σ = 31113032948. Its totient is φ = 31113032946.

The previous prime is 31113032939. The next prime is 31113033023. The reversal of 31113032947 is 74923031113.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31113032947 - 2³ = 31113032939 is a prime.

It is a super-2 number, since 2×31113032947² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31113032917) 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 as a sum of consecutive naturals, namely, 15556516473 + 15556516474.

It is an arithmetic number, because the mean of its divisors is an integer number (15556516474).

Almost surely, 2^31113032947 is an apocalyptic number.

31113032947 is a deficient number, since it is larger than the sum of its proper divisors (1).

31113032947 is an equidigital number, since it uses as much as digits as its factorization.

31113032947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 34.

The spelling of 31113032947 in words is "thirty-one billion, one hundred thirteen million, thirty-two thousand, nine hundred forty-seven".