31313422431349 has 2 divisors, whose sum is σ = 31313422431350. Its totient is φ = 31313422431348.

The previous prime is 31313422431289. The next prime is 31313422431391. The reversal of 31313422431349 is 94313422431313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27781522389124 + 3531900042225 = 5270818^2 + 1879335^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31313422431349 is a prime.

It is a super-2 number, since 2×31313422431349² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31313422471349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15656711215674 + 15656711215675.

It is an arithmetic number, because the mean of its divisors is an integer number (15656711215675).

Almost surely, 2^{31313422431349} is an apocalyptic number.

It is an amenable number.

31313422431349 is a deficient number, since it is larger than the sum of its proper divisors (1).

31313422431349 is an equidigital number, since it uses as much as digits as its factorization.

31313422431349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 559872, while the sum is 43.

The spelling of 31313422431349 in words is "thirty-one trillion, three hundred thirteen billion, four hundred twenty-two million, four hundred thirty-one thousand, three hundred forty-nine".