31131233053 has 2 divisors, whose sum is σ = 31131233054. Its totient is φ = 31131233052.

The previous prime is 31131232991. The next prime is 31131233083. The reversal of 31131233053 is 35033213113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27146846169 + 3984386884 = 164763^2 + 63122^2 .

It is a cyclic number.

It is not a de Polignac number, because 31131233053 - 2²¹ = 31129135901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31131233083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15565616526 + 15565616527.

It is an arithmetic number, because the mean of its divisors is an integer number (15565616527).

Almost surely, 2^31131233053 is an apocalyptic number.

It is an amenable number.

31131233053 is a deficient number, since it is larger than the sum of its proper divisors (1).

31131233053 is an equidigital number, since it uses as much as digits as its factorization.

31131233053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2430, while the sum is 25.

Adding to 31131233053 its reverse (35033213113), we get a palindrome (66164446166).

The spelling of 31131233053 in words is "thirty-one billion, one hundred thirty-one million, two hundred thirty-three thousand, fifty-three".