31045450516432 has 80 divisors (see below), whose sum is σ = 66222639729792. Its totient is φ = 13982248949760.

The previous prime is 31045450516429. The next prime is 31045450516433. The reversal of 31045450516432 is 23461505454013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31045450516433) 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, 7512388 + ... + 10887004.

Almost surely, 2^{31045450516432} 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 31045450516432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33111319864896).

31045450516432 is an abundant number, since it is smaller than the sum of its proper divisors (35177189213360).

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

31045450516432 is a wasteful number, since it uses less digits than its factorization.

31045450516432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3375116 (or 3375110 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 43.

The spelling of 31045450516432 in words is "thirty-one trillion, forty-five billion, four hundred fifty million, five hundred sixteen thousand, four hundred thirty-two".