31132021113 has 32 divisors (see below), whose sum is σ = 49678041600. Its totient is φ = 19205052048.

The previous prime is 31132021097. The next prime is 31132021153. The reversal of 31132021113 is 31112023113.

31132021113 is a `hidden beast` number, since 311 + 320 + 21 + 1 + 13 = 666.

It is not a de Polignac number, because 31132021113 - 2⁴ = 31132021097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31132021153) 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 31 ways as a sum of consecutive naturals, for example, 683595 + ... + 727712.

It is an arithmetic number, because the mean of its divisors is an integer number (1552438800).

Almost surely, 2^31132021113 is an apocalyptic number.

It is an amenable number.

31132021113 is a deficient number, since it is larger than the sum of its proper divisors (18546020487).

31132021113 is a wasteful number, since it uses less digits than its factorization.

31132021113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1411378 (or 1411372 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 31132021113 its reverse (31112023113), we get a palindrome (62244044226).

The spelling of 31132021113 in words is "thirty-one billion, one hundred thirty-two million, twenty-one thousand, one hundred thirteen".