1031312131 has 2 divisors, whose sum is σ = 1031312132. Its totient is φ = 1031312130.

The previous prime is 1031312083. The next prime is 1031312167. The reversal of 1031312131 is 1312131301.

1031312131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1031312131 - 2⁷ = 1031312003 is a prime.

It is a super-2 number, since 2×1031312131² = 2127209423095522322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1031313131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515656065 + 515656066.

It is an arithmetic number, because the mean of its divisors is an integer number (515656066).

Almost surely, 2^1031312131 is an apocalyptic number.

1031312131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031312131 is an equidigital number, since it uses as much as digits as its factorization.

1031312131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 1031312131 is about 32114.0488104505. The cubic root of 1031312131 is about 1010.3302945488.

Adding to 1031312131 its reverse (1312131301), we get a palindrome (2343443432).

The spelling of 1031312131 in words is "one billion, thirty-one million, three hundred twelve thousand, one hundred thirty-one".