231013546 has 4 divisors (see below), whose sum is σ = 346520322. Its totient is φ = 115506772.

The previous prime is 231013513. The next prime is 231013553. The reversal of 231013546 is 645310132.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 129709321 + 101304225 = 11389^2 + 10065^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 231013546.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57753385 + ... + 57753388.

Almost surely, 2^231013546 is an apocalyptic number.

231013546 is a deficient number, since it is larger than the sum of its proper divisors (115506776).

231013546 is a wasteful number, since it uses less digits than its factorization.

231013546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115506775.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 231013546 is about 15199.1297777208. The cubic root of 231013546 is about 613.5912373024.

Adding to 231013546 its reverse (645310132), we get a palindrome (876323678).

The spelling of 231013546 in words is "two hundred thirty-one million, thirteen thousand, five hundred forty-six".