56431903 has 8 divisors (see below), whose sum is σ = 64238976. Its totient is φ = 49071000.

The previous prime is 56431877. The next prime is 56431927. The reversal of 56431903 is 30913465.

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

It is a de Polignac number, because none of the positive numbers 2^k-56431903 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 (56431933) 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, 111273 + ... + 111778.

It is an arithmetic number, because the mean of its divisors is an integer number (8029872).

Almost surely, 2^56431903 is an apocalyptic number.

56431903 is a deficient number, since it is larger than the sum of its proper divisors (7807073).

56431903 is a wasteful number, since it uses less digits than its factorization.

56431903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223085.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 56431903 is about 7512.1170784274. The cubic root of 56431903 is about 383.5672909973.

The spelling of 56431903 in words is "fifty-six million, four hundred thirty-one thousand, nine hundred three".