631190401 has 8 divisors (see below), whose sum is σ = 644995584. Its totient is φ = 617400960.

The previous prime is 631190377. The next prime is 631190407. The reversal of 631190401 is 104091136.

631190401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 631190401 - 2⁵ = 631190369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (631190407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116881 + ... + 122161.

It is an arithmetic number, because the mean of its divisors is an integer number (80624448).

Almost surely, 2^631190401 is an apocalyptic number.

It is an amenable number.

631190401 is a deficient number, since it is larger than the sum of its proper divisors (13805183).

631190401 is a wasteful number, since it uses less digits than its factorization.

631190401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7871.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 631190401 is about 25123.5029603756. The cubic root of 631190401 is about 857.8014878813.

The spelling of 631190401 in words is "six hundred thirty-one million, one hundred ninety thousand, four hundred one".