2131503131 has 2 divisors, whose sum is σ = 2131503132. Its totient is φ = 2131503130.

The previous prime is 2131503119. The next prime is 2131503137. The reversal of 2131503131 is 1313051312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2131503131 - 2³⁰ = 1057761307 is a prime.

It is a super-2 number, since 2×2131503131² = 9086611194925606322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2131503137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065751565 + 1065751566.

It is an arithmetic number, because the mean of its divisors is an integer number (1065751566).

Almost surely, 2^2131503131 is an apocalyptic number.

2131503131 is a deficient number, since it is larger than the sum of its proper divisors (1).

2131503131 is an equidigital number, since it uses as much as digits as its factorization.

2131503131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 2131503131 is about 46168.2047625853. The cubic root of 2131503131 is about 1286.9509406232.

Adding to 2131503131 its reverse (1313051312), we get a palindrome (3444554443).

The spelling of 2131503131 in words is "two billion, one hundred thirty-one million, five hundred three thousand, one hundred thirty-one".