31106243745 has 24 divisors (see below), whose sum is σ = 53936064000. Its totient is φ = 16584281376.

The previous prime is 31106243689. The next prime is 31106243761. The reversal of 31106243745 is 54734260113.

It is not a de Polignac number, because 31106243745 - 2⁷ = 31106243617 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14656 + ... + 249854.

It is an arithmetic number, because the mean of its divisors is an integer number (2247336000).

Almost surely, 2^31106243745 is an apocalyptic number.

It is an amenable number.

31106243745 is a deficient number, since it is larger than the sum of its proper divisors (22829820255).

31106243745 is a wasteful number, since it uses less digits than its factorization.

31106243745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238149 (or 238146 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The spelling of 31106243745 in words is "thirty-one billion, one hundred six million, two hundred forty-three thousand, seven hundred forty-five".