31511112053 has 2 divisors, whose sum is σ = 31511112054. Its totient is φ = 31511112052.

The previous prime is 31511112007. The next prime is 31511112131. The reversal of 31511112053 is 35021111513.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19193885764 + 12317226289 = 138542^2 + 110983^2 .

It is a cyclic number.

It is not a de Polignac number, because 31511112053 - 2¹⁰ = 31511111029 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31511112253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15755556026 + 15755556027.

It is an arithmetic number, because the mean of its divisors is an integer number (15755556027).

Almost surely, 2^31511112053 is an apocalyptic number.

It is an amenable number.

31511112053 is a deficient number, since it is larger than the sum of its proper divisors (1).

31511112053 is an equidigital number, since it uses as much as digits as its factorization.

31511112053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 450, while the sum is 23.

Adding to 31511112053 its reverse (35021111513), we get a palindrome (66532223566).

The spelling of 31511112053 in words is "thirty-one billion, five hundred eleven million, one hundred twelve thousand, fifty-three".