111472631 has 2 divisors, whose sum is σ = 111472632. Its totient is φ = 111472630.

The previous prime is 111472619. The next prime is 111472633. The reversal of 111472631 is 136274111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111472631 - 2⁶ = 111472567 is a prime.

It is a super-2 number, since 2×111472631² = 24852294924124322, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 111472633, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_6382610 and since 111472631 and 6382610 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111472631.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111472633) 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 as a sum of consecutive naturals, namely, 55736315 + 55736316.

It is an arithmetic number, because the mean of its divisors is an integer number (55736316).

Almost surely, 2^111472631 is an apocalyptic number.

111472631 is a deficient number, since it is larger than the sum of its proper divisors (1).

111472631 is an equidigital number, since it uses as much as digits as its factorization.

111472631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1008, while the sum is 26.

The square root of 111472631 is about 10558.0600017238. The cubic root of 111472631 is about 481.2706942020.

The spelling of 111472631 in words is "one hundred eleven million, four hundred seventy-two thousand, six hundred thirty-one".