31153223112 has 64 divisors (see below), whose sum is σ = 89961192000. Its totient is φ = 8885053440.

The previous prime is 31153223083. The next prime is 31153223159. The reversal of 31153223112 is 21132235113.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3466237 + ... + 3475212.

It is an arithmetic number, because the mean of its divisors is an integer number (1405643625).

Almost surely, 2^31153223112 is an apocalyptic number.

It is an amenable number.

31153223112 is an abundant number, since it is smaller than the sum of its proper divisors (58807968888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31153223112 is a wasteful number, since it uses less digits than its factorization.

31153223112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6941486 (or 6941482 counting only the distinct ones).

The product of its digits is 1080, while the sum is 24.

Adding to 31153223112 its reverse (21132235113), we get a palindrome (52285458225).

The spelling of 31153223112 in words is "thirty-one billion, one hundred fifty-three million, two hundred twenty-three thousand, one hundred twelve".