531632369 has 8 divisors (see below), whose sum is σ = 571520640. Its totient is φ = 492934896.

The previous prime is 531632357. The next prime is 531632377. The reversal of 531632369 is 963236135.

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 531632369 - 2²⁴ = 514855153 is a prime.

It is a super-2 number, since 2×531632369² = 565265951537104322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (531332369) 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, 296774 + ... + 298559.

It is an arithmetic number, because the mean of its divisors is an integer number (71440080).

Almost surely, 2^531632369 is an apocalyptic number.

It is an amenable number.

531632369 is a deficient number, since it is larger than the sum of its proper divisors (39888271).

531632369 is a wasteful number, since it uses less digits than its factorization.

531632369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595399.

The product of its digits is 87480, while the sum is 38.

The square root of 531632369 is about 23057.1543994483. The cubic root of 531632369 is about 810.0972138568.

The spelling of 531632369 in words is "five hundred thirty-one million, six hundred thirty-two thousand, three hundred sixty-nine".