31234477456 has 80 divisors (see below), whose sum is σ = 74686441984. Its totient is φ = 12322616832.

The previous prime is 31234477453. The next prime is 31234477493. The reversal of 31234477456 is 65477443213.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (31234477453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 505126 + ... + 563578.

Almost surely, 2^31234477456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31234477456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37343220992).

31234477456 is an abundant number, since it is smaller than the sum of its proper divisors (43451964528).

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

31234477456 is a wasteful number, since it uses less digits than its factorization.

31234477456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58848 (or 58842 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 46.

The spelling of 31234477456 in words is "thirty-one billion, two hundred thirty-four million, four hundred seventy-seven thousand, four hundred fifty-six".