31113331253 has 2 divisors, whose sum is σ = 31113331254. Its totient is φ = 31113331252.

The previous prime is 31113331219. The next prime is 31113331267. The reversal of 31113331253 is 35213331113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30613451089 + 499880164 = 174967^2 + 22358^2 .

It is a cyclic number.

It is not a de Polignac number, because 31113331253 - 2⁶ = 31113331189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31113331553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15556665626 + 15556665627.

It is an arithmetic number, because the mean of its divisors is an integer number (15556665627).

Almost surely, 2^31113331253 is an apocalyptic number.

It is an amenable number.

31113331253 is a deficient number, since it is larger than the sum of its proper divisors (1).

31113331253 is an equidigital number, since it uses as much as digits as its factorization.

31113331253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2430, while the sum is 26.

Adding to 31113331253 its reverse (35213331113), we get a palindrome (66326662366).

The spelling of 31113331253 in words is "thirty-one billion, one hundred thirteen million, three hundred thirty-one thousand, two hundred fifty-three".