31422307013 has 2 divisors, whose sum is σ = 31422307014. Its totient is φ = 31422307012.

The previous prime is 31422306997. The next prime is 31422307067. The reversal of 31422307013 is 31070322413.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31358034724 + 64272289 = 177082^2 + 8017^2 .

It is a cyclic number.

It is not a de Polignac number, because 31422307013 - 2⁴ = 31422306997 is a prime.

It is a super-2 number, since 2×31422307013² (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 (31422307093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15711153506 + 15711153507.

It is an arithmetic number, because the mean of its divisors is an integer number (15711153507).

Almost surely, 2^31422307013 is an apocalyptic number.

It is an amenable number.

31422307013 is a deficient number, since it is larger than the sum of its proper divisors (1).

31422307013 is an equidigital number, since it uses as much as digits as its factorization.

31422307013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 26.

Adding to 31422307013 its reverse (31070322413), we get a palindrome (62492629426).

The spelling of 31422307013 in words is "thirty-one billion, four hundred twenty-two million, three hundred seven thousand, thirteen".