231500153 has 4 divisors (see below), whose sum is σ = 231563088. Its totient is φ = 231437220.

The previous prime is 231500147. The next prime is 231500173. The reversal of 231500153 is 351005132.

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 231500153 - 2¹⁰ = 231499129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231500173) 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, 25583 + ... + 33428.

It is an arithmetic number, because the mean of its divisors is an integer number (57890772).

Almost surely, 2^231500153 is an apocalyptic number.

It is an amenable number.

231500153 is a deficient number, since it is larger than the sum of its proper divisors (62935).

231500153 is an equidigital number, since it uses as much as digits as its factorization.

231500153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62934.

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

The square root of 231500153 is about 15215.1290825941. The cubic root of 231500153 is about 614.0217580805.

Adding to 231500153 its reverse (351005132), we get a palindrome (582505285).

The spelling of 231500153 in words is "two hundred thirty-one million, five hundred thousand, one hundred fifty-three".