31555552453 has 4 divisors (see below), whose sum is σ = 32408405260. Its totient is φ = 30702699648.

The previous prime is 31555552433. The next prime is 31555552481. The reversal of 31555552453 is 35425555513.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15594514884 + 15961037569 = 124878^2 + 126337^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31555552453 is a prime.

It is a super-2 number, since 2×31555552453² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31555552433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 426426348 + ... + 426426421.

It is an arithmetic number, because the mean of its divisors is an integer number (8102101315).

Almost surely, 2^31555552453 is an apocalyptic number.

It is an amenable number.

31555552453 is a deficient number, since it is larger than the sum of its proper divisors (852852807).

31555552453 is an equidigital number, since it uses as much as digits as its factorization.

31555552453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 852852806.

The product of its digits is 1125000, while the sum is 43.

The spelling of 31555552453 in words is "thirty-one billion, five hundred fifty-five million, five hundred fifty-two thousand, four hundred fifty-three".