31880104749 has 12 divisors (see below), whose sum is σ = 46076652700. Its totient is φ = 21240658944.

The previous prime is 31880104733. The next prime is 31880104859. The reversal of 31880104749 is 94740108813.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7154114724 + 24725990025 = 84582^2 + 157245^2 .

It is not a de Polignac number, because 31880104749 - 2⁴ = 31880104733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31880104349) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1046164 + ... + 1076205.

Almost surely, 2^31880104749 is an apocalyptic number.

It is an amenable number.

31880104749 is a deficient number, since it is larger than the sum of its proper divisors (14196547951).

31880104749 is a wasteful number, since it uses less digits than its factorization.

31880104749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2124044 (or 2124041 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The spelling of 31880104749 in words is "thirty-one billion, eight hundred eighty million, one hundred four thousand, seven hundred forty-nine".