31045350512 has 80 divisors (see below), whose sum is σ = 67936946400. Its totient is φ = 13613752320.

The previous prime is 31045350503. The next prime is 31045350521. The reversal of 31045350512 is 21505354013.

It is an interprime number because it is at equal distance from previous prime (31045350503) and next prime (31045350521).

It is a Harshad number since it is a multiple of its sum of digits (29).

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, 10864988 + ... + 10867844.

It is an arithmetic number, because the mean of its divisors is an integer number (849211830).

Almost surely, 2^31045350512 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 31045350512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33968473200).

31045350512 is an abundant number, since it is smaller than the sum of its proper divisors (36891595888).

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

31045350512 is a wasteful number, since it uses less digits than its factorization.

31045350512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5034 (or 5028 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 29.

The spelling of 31045350512 in words is "thirty-one billion, forty-five million, three hundred fifty thousand, five hundred twelve".