1031312011 has 2 divisors, whose sum is σ = 1031312012. Its totient is φ = 1031312010.

The previous prime is 1031312003. The next prime is 1031312027. The reversal of 1031312011 is 1102131301.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1031312011 - 2³ = 1031312003 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1031311982 and 1031312000.

It is not a weakly prime, because it can be changed into another prime (1031312911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515656005 + 515656006.

It is an arithmetic number, because the mean of its divisors is an integer number (515656006).

Almost surely, 2^1031312011 is an apocalyptic number.

1031312011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031312011 is an equidigital number, since it uses as much as digits as its factorization.

1031312011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1031312011 is about 32114.0469421093. The cubic root of 1031312011 is about 1010.3302553626.

Adding to 1031312011 its reverse (1102131301), we get a palindrome (2133443312).

The spelling of 1031312011 in words is "one billion, thirty-one million, three hundred twelve thousand, eleven".