31310312093 has 2 divisors, whose sum is σ = 31310312094. Its totient is φ = 31310312092.

The previous prime is 31310312083. The next prime is 31310312113. The reversal of 31310312093 is 39021301313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29433862969 + 1876449124 = 171563^2 + 43318^2 .

It is a cyclic number.

It is not a de Polignac number, because 31310312093 - 2¹⁰ = 31310311069 is a prime.

It is a super-2 number, since 2×31310312093² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31310312063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15655156046 + 15655156047.

It is an arithmetic number, because the mean of its divisors is an integer number (15655156047).

Almost surely, 2^31310312093 is an apocalyptic number.

It is an amenable number.

31310312093 is a deficient number, since it is larger than the sum of its proper divisors (1).

31310312093 is an equidigital number, since it uses as much as digits as its factorization.

31310312093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1458, while the sum is 26.

The spelling of 31310312093 in words is "thirty-one billion, three hundred ten million, three hundred twelve thousand, ninety-three".