631310551453 has 4 divisors (see below), whose sum is σ = 631337954940. Its totient is φ = 631283147968.

The previous prime is 631310551423. The next prime is 631310551463. The reversal of 631310551453 is 354155013136.

631310551453 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 583752537369 + 47558014084 = 764037^2 + 218078^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-631310551453 is a prime.

It is a super-2 number, since 2×631310551453² (a number of 24 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 (631310551423) 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, 13667158 + ... + 13713271.

It is an arithmetic number, because the mean of its divisors is an integer number (157834488735).

Almost surely, 2^631310551453 is an apocalyptic number.

It is an amenable number.

631310551453 is a deficient number, since it is larger than the sum of its proper divisors (27403487).

631310551453 is a wasteful number, since it uses less digits than its factorization.

631310551453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27403486.

The product of its (nonzero) digits is 81000, while the sum is 37.

Adding to 631310551453 its reverse (354155013136), we get a palindrome (985465564589).

The spelling of 631310551453 in words is "six hundred thirty-one billion, three hundred ten million, five hundred fifty-one thousand, four hundred fifty-three".