31324020253 has 2 divisors, whose sum is σ = 31324020254. Its totient is φ = 31324020252.

The previous prime is 31324020181. The next prime is 31324020317. The reversal of 31324020253 is 35202042313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19705982884 + 11618037369 = 140378^2 + 107787^2 .

It is a cyclic number.

It is not a de Polignac number, because 31324020253 - 2²⁵ = 31290465821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31324020053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15662010126 + 15662010127.

It is an arithmetic number, because the mean of its divisors is an integer number (15662010127).

Almost surely, 2^31324020253 is an apocalyptic number.

It is an amenable number.

31324020253 is a deficient number, since it is larger than the sum of its proper divisors (1).

31324020253 is an equidigital number, since it uses as much as digits as its factorization.

31324020253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 25.

Adding to 31324020253 its reverse (35202042313), we get a palindrome (66526062566).

The spelling of 31324020253 in words is "thirty-one billion, three hundred twenty-four million, twenty thousand, two hundred fifty-three".