631190545 has 8 divisors (see below), whose sum is σ = 797293440. Its totient is φ = 478375920.

The previous prime is 631190519. The next prime is 631190563. The reversal of 631190545 is 545091136.

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

It is not a de Polignac number, because 631190545 - 2²¹ = 629093393 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 631190545.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3321961 + ... + 3322150.

It is an arithmetic number, because the mean of its divisors is an integer number (99661680).

Almost surely, 2^631190545 is an apocalyptic number.

It is an amenable number.

631190545 is a deficient number, since it is larger than the sum of its proper divisors (166102895).

631190545 is a wasteful number, since it uses less digits than its factorization.

631190545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6644135.

The product of its (nonzero) digits is 16200, while the sum is 34.

The square root of 631190545 is about 25123.5058262178. The cubic root of 631190545 is about 857.8015531144.

The spelling of 631190545 in words is "six hundred thirty-one million, one hundred ninety thousand, five hundred forty-five".