231551053 has 4 divisors (see below), whose sum is σ = 231605568. Its totient is φ = 231496540.

The previous prime is 231551039. The next prime is 231551063. The reversal of 231551053 is 350155132.

231551053 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 231551053 - 2⁹ = 231550541 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 (231551063) 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, 20293 + ... + 29578.

It is an arithmetic number, because the mean of its divisors is an integer number (57901392).

Almost surely, 2^231551053 is an apocalyptic number.

It is an amenable number.

231551053 is a deficient number, since it is larger than the sum of its proper divisors (54515).

231551053 is an equidigital number, since it uses as much as digits as its factorization.

231551053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54514.

The product of its (nonzero) digits is 2250, while the sum is 25.

The square root of 231551053 is about 15216.8016678933. The cubic root of 231551053 is about 614.0667564916.

The spelling of 231551053 in words is "two hundred thirty-one million, five hundred fifty-one thousand, fifty-three".