3131120523 has 32 divisors (see below), whose sum is σ = 4570700800. Its totient is φ = 1899645696.

The previous prime is 3131120471. The next prime is 3131120557. The reversal of 3131120523 is 3250211313.

3131120523 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 3131120523 - 2¹⁰ = 3131119499 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3131120523.

It is not an unprimeable number, because it can be changed into a prime (3131120023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 157215 + ... + 176007.

It is an arithmetic number, because the mean of its divisors is an integer number (142834400).

Almost surely, 2^3131120523 is an apocalyptic number.

3131120523 is a deficient number, since it is larger than the sum of its proper divisors (1439580277).

3131120523 is a wasteful number, since it uses less digits than its factorization.

3131120523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18931.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 3131120523 is about 55956.4162808878. The cubic root of 3131120523 is about 1462.9627275955.

Adding to 3131120523 its reverse (3250211313), we get a palindrome (6381331836).

The spelling of 3131120523 in words is "three billion, one hundred thirty-one million, one hundred twenty thousand, five hundred twenty-three".