231545963 has 12 divisors (see below), whose sum is σ = 261392880. Its totient is φ = 204803280.

The previous prime is 231545959. The next prime is 231545971. The reversal of 231545963 is 369545132.

It is not a de Polignac number, because 231545963 - 2² = 231545959 is a prime.

It is a super-2 number, since 2×231545963² = 107227065963194738, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231545953) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21383 + ... + 30336.

It is an arithmetic number, because the mean of its divisors is an integer number (21782740).

Almost surely, 2^231545963 is an apocalyptic number.

231545963 is a deficient number, since it is larger than the sum of its proper divisors (29846917).

231545963 is a wasteful number, since it uses less digits than its factorization.

231545963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51778 (or 51767 counting only the distinct ones).

The product of its digits is 97200, while the sum is 38.

The square root of 231545963 is about 15216.6344176365. The cubic root of 231545963 is about 614.0622569473.

The spelling of 231545963 in words is "two hundred thirty-one million, five hundred forty-five thousand, nine hundred sixty-three".