31493028336 has 480 divisors, whose sum is σ = 107210138112. Its totient is φ = 7871109120.

The previous prime is 31493028283. The next prime is 31493028337. The reversal of 31493028336 is 63382039413.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31493028337) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 159862990 + ... + 159863186.

Almost surely, 2^31493028336 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 31493028336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53605069056).

31493028336 is an abundant number, since it is smaller than the sum of its proper divisors (75717109776).

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

31493028336 is a wasteful number, since it uses less digits than its factorization.

31493028336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437 (or 424 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 42.

The spelling of 31493028336 in words is "thirty-one billion, four hundred ninety-three million, twenty-eight thousand, three hundred thirty-six".