3131356745 has 16 divisors (see below), whose sum is σ = 4110073920. Its totient is φ = 2271326400.

The previous prime is 3131356741. The next prime is 3131356777. The reversal of 3131356745 is 5476531313.

3131356745 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3131356745 - 2² = 3131356741 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3131356699 and 3131356708.

It is not an unprimeable number, because it can be changed into a prime (3131356741) 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, 54266 + ... + 95955.

It is an arithmetic number, because the mean of its divisors is an integer number (256879620).

Almost surely, 2^3131356745 is an apocalyptic number.

It is an amenable number.

3131356745 is a deficient number, since it is larger than the sum of its proper divisors (978717175).

3131356745 is a wasteful number, since it uses less digits than its factorization.

3131356745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150616.

The product of its digits is 113400, while the sum is 38.

The square root of 3131356745 is about 55958.5270088483. The cubic root of 3131356745 is about 1462.9995169056. Note that the first 3 decimals are identical.

The spelling of 3131356745 in words is "three billion, one hundred thirty-one million, three hundred fifty-six thousand, seven hundred forty-five".