231477 has 16 divisors (see below), whose sum is σ = 337920. Its totient is φ = 140400.

The previous prime is 231463. The next prime is 231479. The reversal of 231477 is 774132.

It is not a de Polignac number, because 231477 - 2⁴ = 231461 is a prime.

It is a plaindrome in base 15.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 231477.

It is not an unprimeable number, because it can be changed into a prime (231479) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1702 + ... + 1832.

It is an arithmetic number, because the mean of its divisors is an integer number (21120).

2²³¹⁴⁷⁷ is an apocalyptic number.

231477 is the 393-rd pentagonal number.

It is an amenable number.

231477 is a deficient number, since it is larger than the sum of its proper divisors (106443).

231477 is a wasteful number, since it uses less digits than its factorization.

231477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184.

The product of its digits is 1176, while the sum is 24.

The square root of 231477 is about 481.1205670100. The cubic root of 231477 is about 61.4001287367.

The spelling of 231477 in words is "two hundred thirty-one thousand, four hundred seventy-seven".