31312942823 has 2 divisors, whose sum is σ = 31312942824. Its totient is φ = 31312942822.

The previous prime is 31312942807. The next prime is 31312942841. The reversal of 31312942823 is 32824921313.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31312942823 - 2⁴ = 31312942807 is a prime.

It is a super-3 number, since 3×31312942823³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31312942883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15656471411 + 15656471412.

It is an arithmetic number, because the mean of its divisors is an integer number (15656471412).

Almost surely, 2^31312942823 is an apocalyptic number.

31312942823 is a deficient number, since it is larger than the sum of its proper divisors (1).

31312942823 is an equidigital number, since it uses as much as digits as its factorization.

31312942823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 38.

The spelling of 31312942823 in words is "thirty-one billion, three hundred twelve million, nine hundred forty-two thousand, eight hundred twenty-three".