231472535 has 32 divisors (see below), whose sum is σ = 337996800. Its totient is φ = 148642560.

The previous prime is 231472499. The next prime is 231472537. The reversal of 231472535 is 535274132.

Together with 106524264 it forms a betrothed pair.

It is not a de Polignac number, because 231472535 - 2¹² = 231468439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231472537) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57230 + ... + 61140.

It is an arithmetic number, because the mean of its divisors is an integer number (10562400).

Almost surely, 2^231472535 is an apocalyptic number.

231472535 is a deficient number, since it is larger than the sum of its proper divisors (106524265).

231472535 is a wasteful number, since it uses less digits than its factorization.

231472535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4031.

The product of its digits is 25200, while the sum is 32.

The square root of 231472535 is about 15214.2214720307. The cubic root of 231472535 is about 613.9973394828.

The spelling of 231472535 in words is "two hundred thirty-one million, four hundred seventy-two thousand, five hundred thirty-five".