31312345453 has 2 divisors, whose sum is σ = 31312345454. Its totient is φ = 31312345452.

The previous prime is 31312345451. The next prime is 31312345469. The reversal of 31312345453 is 35454321313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23110688484 + 8201656969 = 152022^2 + 90563^2 .

It is a cyclic number.

It is not a de Polignac number, because 31312345453 - 2¹ = 31312345451 is a prime.

Together with 31312345451, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31312345451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15656172726 + 15656172727.

It is an arithmetic number, because the mean of its divisors is an integer number (15656172727).

Almost surely, 2^31312345453 is an apocalyptic number.

It is an amenable number.

31312345453 is a deficient number, since it is larger than the sum of its proper divisors (1).

31312345453 is an equidigital number, since it uses as much as digits as its factorization.

31312345453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64800, while the sum is 34.

Adding to 31312345453 its reverse (35454321313), we get a palindrome (66766666766).

The spelling of 31312345453 in words is "thirty-one billion, three hundred twelve million, three hundred forty-five thousand, four hundred fifty-three".