631845297623 has 4 divisors (see below), whose sum is σ = 631878937728. Its totient is φ = 631811657520.

The previous prime is 631845297557. The next prime is 631845297631. The reversal of 631845297623 is 326792548136.

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

It is a cyclic number.

It is not a de Polignac number, because 631845297623 - 2¹⁴ = 631845281239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631845257623) 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, 16791863 + ... + 16829448.

It is an arithmetic number, because the mean of its divisors is an integer number (157969734432).

Almost surely, 2^631845297623 is an apocalyptic number.

631845297623 is a deficient number, since it is larger than the sum of its proper divisors (33640105).

631845297623 is a wasteful number, since it uses less digits than its factorization.

631845297623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33640104.

The product of its digits is 13063680, while the sum is 56.

The spelling of 631845297623 in words is "six hundred thirty-one billion, eight hundred forty-five million, two hundred ninety-seven thousand, six hundred twenty-three".