31457434344 has 96 divisors (see below), whose sum is σ = 91894360320. Its totient is φ = 8947459584.

The previous prime is 31457434343. The next prime is 31457434369. The reversal of 31457434344 is 44343475413.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 31457434296 and 31457434305.

It is not an unprimeable number, because it can be changed into a prime (31457434343) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 202272 + ... + 322224.

It is an arithmetic number, because the mean of its divisors is an integer number (957232920).

Almost surely, 2^31457434344 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 31457434344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45947180160).

31457434344 is an abundant number, since it is smaller than the sum of its proper divisors (60436925976).

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

31457434344 is a wasteful number, since it uses less digits than its factorization.

31457434344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120199 (or 120188 counting only the distinct ones).

The product of its digits is 967680, while the sum is 42.

The spelling of 31457434344 in words is "thirty-one billion, four hundred fifty-seven million, four hundred thirty-four thousand, three hundred forty-four".