231079553 has 4 divisors (see below), whose sum is σ = 233863728. Its totient is φ = 228295380.

The previous prime is 231079517. The next prime is 231079559. The reversal of 231079553 is 355970132.

It is a happy number.

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 231079553 - 2⁸ = 231079297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231079559) 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, 1391963 + ... + 1392128.

It is an arithmetic number, because the mean of its divisors is an integer number (58465932).

Almost surely, 2^231079553 is an apocalyptic number.

It is an amenable number.

231079553 is a deficient number, since it is larger than the sum of its proper divisors (2784175).

231079553 is an equidigital number, since it uses as much as digits as its factorization.

231079553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2784174.

The product of its (nonzero) digits is 28350, while the sum is 35.

The square root of 231079553 is about 15201.3010298461. The cubic root of 231079553 is about 613.6496717689.

The spelling of 231079553 in words is "two hundred thirty-one million, seventy-nine thousand, five hundred fifty-three".