31445521104 has 40 divisors (see below), whose sum is σ = 81243599680. Its totient is φ = 10480635648.

The previous prime is 31445521103. The next prime is 31445521111. The reversal of 31445521104 is 40112554413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31445521103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 449244 + ... + 514500.

It is an arithmetic number, because the mean of its divisors is an integer number (2031089992).

Almost surely, 2^31445521104 is an apocalyptic number.

It is an amenable number.

31445521104 is an abundant number, since it is smaller than the sum of its proper divisors (49798078576).

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

31445521104 is a wasteful number, since it uses less digits than its factorization.

31445521104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75307 (or 75301 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The spelling of 31445521104 in words is "thirty-one billion, four hundred forty-five million, five hundred twenty-one thousand, one hundred four".