31323505454016 has 56 divisors (see below), whose sum is σ = 82877185867344. Its totient is φ = 10441116702720.

The previous prime is 31323505453979. The next prime is 31323505454029. The reversal of 31323505454016 is 61045450532313.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73102156 + ... + 73529396.

Almost surely, 2^{31323505454016} is an apocalyptic number.

It is an amenable number.

31323505454016 is an abundant number, since it is smaller than the sum of its proper divisors (51553680413328).

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

31323505454016 is a wasteful number, since it uses less digits than its factorization.

31323505454016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 809109 (or 809099 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 42.

Adding to 31323505454016 its reverse (61045450532313), we get a palindrome (92368955986329).

The spelling of 31323505454016 in words is "thirty-one trillion, three hundred twenty-three billion, five hundred five million, four hundred fifty-four thousand, sixteen".