31112201097 has 12 divisors (see below), whose sum is σ = 44941753584. Its totient is φ = 20740587000.

The previous prime is 31112201053. The next prime is 31112201101. The reversal of 31112201097 is 79010221113.

It is not a de Polignac number, because 31112201097 - 2⁷ = 31112200969 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31112201097.

It is not an unprimeable number, because it can be changed into a prime (31112201027) 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 in 11 ways as a sum of consecutive naturals, for example, 206722 + ... + 323972.

It is an arithmetic number, because the mean of its divisors is an integer number (3745146132).

Almost surely, 2^31112201097 is an apocalyptic number.

It is an amenable number.

31112201097 is a deficient number, since it is larger than the sum of its proper divisors (13829552487).

31112201097 is a wasteful number, since it uses less digits than its factorization.

31112201097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146740 (or 146737 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 27.

The spelling of 31112201097 in words is "thirty-one billion, one hundred twelve million, two hundred one thousand, ninety-seven".