31104880890 has 32 divisors (see below), whose sum is σ = 74657249856. Its totient is φ = 8294019840.

The previous prime is 31104880853. The next prime is 31104880897. The reversal of 31104880890 is 9808840113.

It is not an unprimeable number, because it can be changed into a prime (31104880897) 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, 493570 + ... + 553010.

It is an arithmetic number, because the mean of its divisors is an integer number (2333039058).

Almost surely, 2^31104880890 is an apocalyptic number.

31104880890 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31104880890 is an abundant number, since it is smaller than the sum of its proper divisors (43552368966).

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

31104880890 is a wasteful number, since it uses less digits than its factorization.

31104880890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76894.

The product of its (nonzero) digits is 55296, while the sum is 42.

The spelling of 31104880890 in words is "thirty-one billion, one hundred four million, eight hundred eighty thousand, eight hundred ninety".