631396077001 has 4 divisors (see below), whose sum is σ = 631402659072. Its totient is φ = 631389494932.

The previous prime is 631396076977. The next prime is 631396077023. The reversal of 631396077001 is 100770693136.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 631396077001 - 2⁹ = 631396076489 is a prime.

It is a super-2 number, since 2×631396077001² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (631396477001) 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, 3144985 + ... + 3339718.

It is an arithmetic number, because the mean of its divisors is an integer number (157850664768).

Almost surely, 2^631396077001 is an apocalyptic number.

It is an amenable number.

631396077001 is a deficient number, since it is larger than the sum of its proper divisors (6582071).

631396077001 is an equidigital number, since it uses as much as digits as its factorization.

631396077001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6582070.

The product of its (nonzero) digits is 142884, while the sum is 43.

The spelling of 631396077001 in words is "six hundred thirty-one billion, three hundred ninety-six million, seventy-seven thousand, one".