31745745746 has 32 divisors (see below), whose sum is σ = 56025805248. Its totient is φ = 13300309440.

The previous prime is 31745745743. The next prime is 31745745761. The reversal of 31745745746 is 64754754713.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (31745745743) 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, 114080 + ... + 276596.

It is an arithmetic number, because the mean of its divisors is an integer number (1750806414).

Almost surely, 2^31745745746 is an apocalyptic number.

31745745746 is a deficient number, since it is larger than the sum of its proper divisors (24280059502).

31745745746 is a wasteful number, since it uses less digits than its factorization.

31745745746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163226.

The product of its digits is 9878400, while the sum is 53.

The spelling of 31745745746 in words is "thirty-one billion, seven hundred forty-five million, seven hundred forty-five thousand, seven hundred forty-six".