31115749941 has 10 divisors (see below), whose sum is σ = 46481552502. Its totient is φ = 20743833240.

The previous prime is 31115749933. The next prime is 31115749943. The reversal of 31115749941 is 14994751113.

31115749941 is a `hidden beast` number, since 3 + 1 + 1 + 157 + 499 + 4 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 25133346225 + 5982403716 = 158535^2 + 77346^2 .

It is not a de Polignac number, because 31115749941 - 2³ = 31115749933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31115749943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 192072450 + ... + 192072611.

Almost surely, 2^31115749941 is an apocalyptic number.

It is an amenable number.

31115749941 is a deficient number, since it is larger than the sum of its proper divisors (15365802561).

31115749941 is an equidigital number, since it uses as much as digits as its factorization.

31115749941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384145073 (or 384145064 counting only the distinct ones).

The product of its digits is 136080, while the sum is 45.

The spelling of 31115749941 in words is "thirty-one billion, one hundred fifteen million, seven hundred forty-nine thousand, nine hundred forty-one".