3131100131 has 2 divisors, whose sum is σ = 3131100132. Its totient is φ = 3131100130.

The previous prime is 3131100121. The next prime is 3131100139. The reversal of 3131100131 is 1310011313.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3131100131 - 2⁶ = 3131100067 is a prime.

It is a super-2 number, since 2×3131100131² = 19607576060696434322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3131100139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1565550065 + 1565550066.

It is an arithmetic number, because the mean of its divisors is an integer number (1565550066).

Almost surely, 2^3131100131 is an apocalyptic number.

3131100131 is a deficient number, since it is larger than the sum of its proper divisors (1).

3131100131 is an equidigital number, since it uses as much as digits as its factorization.

3131100131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27, while the sum is 14.

The square root of 3131100131 is about 55956.2340673495. The cubic root of 3131100131 is about 1462.9595516504.

Adding to 3131100131 its reverse (1310011313), we get a palindrome (4441111444).

The spelling of 3131100131 in words is "three billion, one hundred thirty-one million, one hundred thousand, one hundred thirty-one".