31113111099 has 12 divisors (see below), whose sum is σ = 48257070504. Its totient is φ = 17778920544.

The previous prime is 31113111053. The next prime is 31113111101. The reversal of 31113111099 is 99011131113.

It is not a de Polignac number, because 31113111099 - 2²⁴ = 31096333883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31113111299) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 105826762 + ... + 105827055.

It is an arithmetic number, because the mean of its divisors is an integer number (4021422542).

Almost surely, 2^31113111099 is an apocalyptic number.

31113111099 is a deficient number, since it is larger than the sum of its proper divisors (17143959405).

31113111099 is a wasteful number, since it uses less digits than its factorization.

31113111099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211653834 (or 211653827 counting only the distinct ones).

The product of its (nonzero) digits is 729, while the sum is 30.

The spelling of 31113111099 in words is "thirty-one billion, one hundred thirteen million, one hundred eleven thousand, ninety-nine".