1312534331 has 2 divisors, whose sum is σ = 1312534332. Its totient is φ = 1312534330.

The previous prime is 1312534303. The next prime is 1312534369. The reversal of 1312534331 is 1334352131.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1312534331 is a prime.

It is a super-2 number, since 2×1312534331² = 3445492740107235122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1312534331.

It is not a weakly prime, because it can be changed into another prime (1312534381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656267165 + 656267166.

It is an arithmetic number, because the mean of its divisors is an integer number (656267166).

Almost surely, 2^1312534331 is an apocalyptic number.

1312534331 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312534331 is an equidigital number, since it uses as much as digits as its factorization.

1312534331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3240, while the sum is 26.

The square root of 1312534331 is about 36228.9156751896. The cubic root of 1312534331 is about 1094.8893311282.

Adding to 1312534331 its reverse (1334352131), we get a palindrome (2646886462).

The spelling of 1312534331 in words is "one billion, three hundred twelve million, five hundred thirty-four thousand, three hundred thirty-one".