31313231051 has 2 divisors, whose sum is σ = 31313231052. Its totient is φ = 31313231050.

The previous prime is 31313230999. The next prime is 31313231069. The reversal of 31313231051 is 15013231313.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31313231051 - 2¹⁰ = 31313230027 is a prime.

It is not a weakly prime, because it can be changed into another prime (31313231071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15656615525 + 15656615526.

It is an arithmetic number, because the mean of its divisors is an integer number (15656615526).

Almost surely, 2^31313231051 is an apocalyptic number.

31313231051 is a deficient number, since it is larger than the sum of its proper divisors (1).

31313231051 is an equidigital number, since it uses as much as digits as its factorization.

31313231051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 810, while the sum is 23.

Adding to 31313231051 its reverse (15013231313), we get a palindrome (46326462364).

The spelling of 31313231051 in words is "thirty-one billion, three hundred thirteen million, two hundred thirty-one thousand, fifty-one".