57304231 has 4 divisors (see below), whose sum is σ = 58853032. Its totient is φ = 55755432.

The previous prime is 57304217. The next prime is 57304241. The reversal of 57304231 is 13240375.

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 57304231 - 2¹⁵ = 57271463 is a prime.

It is a super-2 number, since 2×57304231² = 6567549781002722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 57304196 and 57304205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57304211) 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, 774345 + ... + 774418.

It is an arithmetic number, because the mean of its divisors is an integer number (14713258).

Almost surely, 2^57304231 is an apocalyptic number.

57304231 is a deficient number, since it is larger than the sum of its proper divisors (1548801).

57304231 is a wasteful number, since it uses less digits than its factorization.

57304231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1548800.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 57304231 is about 7569.9558122885. The cubic root of 57304231 is about 385.5335964255.

The spelling of 57304231 in words is "fifty-seven million, three hundred four thousand, two hundred thirty-one".