31113868019 has 16 divisors (see below), whose sum is σ = 35352737280. Its totient is φ = 27145666080.

The previous prime is 31113868013. The next prime is 31113868021. The reversal of 31113868019 is 91086831113.

It is not a de Polignac number, because 31113868019 - 2²⁰ = 31112819443 is a prime.

It is a super-2 number, since 2×31113868019² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31113868013) 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 15 ways as a sum of consecutive naturals, for example, 39677 + ... + 252590.

It is an arithmetic number, because the mean of its divisors is an integer number (2209546080).

Almost surely, 2^31113868019 is an apocalyptic number.

31113868019 is a deficient number, since it is larger than the sum of its proper divisors (4238869261).

31113868019 is a wasteful number, since it uses less digits than its factorization.

31113868019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292730.

The product of its (nonzero) digits is 31104, while the sum is 41.

The spelling of 31113868019 in words is "thirty-one billion, one hundred thirteen million, eight hundred sixty-eight thousand, nineteen".