31312312351 has 2 divisors, whose sum is σ = 31312312352. Its totient is φ = 31312312350.

The previous prime is 31312312337. The next prime is 31312312363. The reversal of 31312312351 is 15321321313.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31312312351 - 2⁵ = 31312312319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31313312351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15656156175 + 15656156176.

It is an arithmetic number, because the mean of its divisors is an integer number (15656156176).

Almost surely, 2^31312312351 is an apocalyptic number.

31312312351 is a deficient number, since it is larger than the sum of its proper divisors (1).

31312312351 is an equidigital number, since it uses as much as digits as its factorization.

31312312351 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1620, while the sum is 25.

Adding to 31312312351 its reverse (15321321313), we get a palindrome (46633633664).

The spelling of 31312312351 in words is "thirty-one billion, three hundred twelve million, three hundred twelve thousand, three hundred fifty-one".