31112042424 has 64 divisors (see below), whose sum is σ = 79169495040. Its totient is φ = 10187049600.

The previous prime is 31112042419. The next prime is 31112042443. The reversal of 31112042424 is 42424021113.

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

It is a junction number, because it is equal to n+sod(n) for n = 31112042394 and 31112042403.

It is a congruent number.

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, 257317 + ... + 358379.

It is an arithmetic number, because the mean of its divisors is an integer number (1237023360).

Almost surely, 2^31112042424 is an apocalyptic number.

It is an amenable number.

31112042424 is an abundant number, since it is smaller than the sum of its proper divisors (48057452616).

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

31112042424 is a wasteful number, since it uses less digits than its factorization.

31112042424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101300 (or 101296 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 31112042424 its reverse (42424021113), we get a palindrome (73536063537).

The spelling of 31112042424 in words is "thirty-one billion, one hundred twelve million, forty-two thousand, four hundred twenty-four".