231013253 has 4 divisors (see below), whose sum is σ = 234461280. Its totient is φ = 227565228.

The previous prime is 231013249. The next prime is 231013259. The reversal of 231013253 is 352310132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 231013253 - 2² = 231013249 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231013259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1723913 + ... + 1724046.

It is an arithmetic number, because the mean of its divisors is an integer number (58615320).

Almost surely, 2^231013253 is an apocalyptic number.

It is an amenable number.

231013253 is a deficient number, since it is larger than the sum of its proper divisors (3448027).

231013253 is an equidigital number, since it uses as much as digits as its factorization.

231013253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3448026.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 231013253 is about 15199.1201390080. The cubic root of 231013253 is about 613.5909778915.

Adding to 231013253 its reverse (352310132), we get a palindrome (583323385).

The spelling of 231013253 in words is "two hundred thirty-one million, thirteen thousand, two hundred fifty-three".