233157 has 4 divisors (see below), whose sum is σ = 310880. Its totient is φ = 155436.

The previous prime is 233143. The next prime is 233159. The reversal of 233157 is 751332.

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 not a de Polignac number, because 233157 - 2⁴ = 233141 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233159) 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, 38857 + ... + 38862.

It is an arithmetic number, because the mean of its divisors is an integer number (77720).

2²³³¹⁵⁷ is an apocalyptic number.

It is an amenable number.

233157 is a deficient number, since it is larger than the sum of its proper divisors (77723).

233157 is an equidigital number, since it uses as much as digits as its factorization.

233157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77722.

The product of its digits is 630, while the sum is 21.

The square root of 233157 is about 482.8633347025. The cubic root of 233157 is about 61.5483128860.

Adding to 233157 its reverse (751332), we get a palindrome (984489).

The spelling of 233157 in words is "two hundred thirty-three thousand, one hundred fifty-seven".