31313112323 has 2 divisors, whose sum is σ = 31313112324. Its totient is φ = 31313112322.

The previous prime is 31313112293. The next prime is 31313112329. The reversal of 31313112323 is 32321131313.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31313112323 - 2²² = 31308918019 is a prime.

It is a super-2 number, since 2×31313112323² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31313112329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15656556161 + 15656556162.

It is an arithmetic number, because the mean of its divisors is an integer number (15656556162).

Almost surely, 2^31313112323 is an apocalyptic number.

31313112323 is a deficient number, since it is larger than the sum of its proper divisors (1).

31313112323 is an equidigital number, since it uses as much as digits as its factorization.

31313112323 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 972, while the sum is 23.

Adding to 31313112323 its reverse (32321131313), we get a palindrome (63634243636).

The spelling of 31313112323 in words is "thirty-one billion, three hundred thirteen million, one hundred twelve thousand, three hundred twenty-three".