31049930772 has 384 divisors, whose sum is σ = 101490278400. Its totient is φ = 8004261888.

The previous prime is 31049930771. The next prime is 31049930773. The reversal of 31049930772 is 27703994013.

It is an interprime number because it is at equal distance from previous prime (31049930771) and next prime (31049930773).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31049930771) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 84604533 + ... + 84604899.

It is an arithmetic number, because the mean of its divisors is an integer number (264297600).

Almost surely, 2^31049930772 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 31049930772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50745139200).

31049930772 is an abundant number, since it is smaller than the sum of its proper divisors (70440347628).

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

31049930772 is a wasteful number, since it uses less digits than its factorization.

31049930772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660 (or 652 counting only the distinct ones).

The product of its (nonzero) digits is 285768, while the sum is 45.

The spelling of 31049930772 in words is "thirty-one billion, forty-nine million, nine hundred thirty thousand, seven hundred seventy-two".