231510053 has 4 divisors (see below), whose sum is σ = 234440640. Its totient is φ = 228579468.

The previous prime is 231510043. The next prime is 231510089. The reversal of 231510053 is 350015132.

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 231510053 - 2⁸ = 231509797 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 (231510043) 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, 1465175 + ... + 1465332.

It is an arithmetic number, because the mean of its divisors is an integer number (58610160).

Almost surely, 2^231510053 is an apocalyptic number.

It is an amenable number.

231510053 is a deficient number, since it is larger than the sum of its proper divisors (2930587).

231510053 is an equidigital number, since it uses as much as digits as its factorization.

231510053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2930586.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 231510053 is about 15215.4544131945. The cubic root of 231510053 is about 614.0305107439.

Adding to 231510053 its reverse (350015132), we get a palindrome (581525185).

The spelling of 231510053 in words is "two hundred thirty-one million, five hundred ten thousand, fifty-three".