1012331531 has 2 divisors, whose sum is σ = 1012331532. Its totient is φ = 1012331530.

The previous prime is 1012331519. The next prime is 1012331557. The reversal of 1012331531 is 1351332101.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1012331531 is a prime.

It is a super-2 number, since 2×1012331531² = 2049630257313607922, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1012331501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506165765 + 506165766.

It is an arithmetic number, because the mean of its divisors is an integer number (506165766).

Almost surely, 2^1012331531 is an apocalyptic number.

1012331531 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012331531 is an equidigital number, since it uses as much as digits as its factorization.

1012331531 is an evil number, because the sum of its binary digits is even.

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

The square root of 1012331531 is about 31817.1578083273. The cubic root of 1012331531 is about 1004.0937288490.

Adding to 1012331531 its reverse (1351332101), we get a palindrome (2363663632).

The spelling of 1012331531 in words is "one billion, twelve million, three hundred thirty-one thousand, five hundred thirty-one".