231500151 has 6 divisors (see below), whose sum is σ = 334389120. Its totient is φ = 154333428.

The previous prime is 231500147. The next prime is 231500173. The reversal of 231500151 is 151005132.

It is not a de Polignac number, because 231500151 - 2² = 231500147 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231500851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12861111 + ... + 12861128.

It is an arithmetic number, because the mean of its divisors is an integer number (55731520).

Almost surely, 2^231500151 is an apocalyptic number.

231500151 is a deficient number, since it is larger than the sum of its proper divisors (102888969).

231500151 is a wasteful number, since it uses less digits than its factorization.

231500151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25722245 (or 25722242 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 231500151 is about 15215.1290168700. The cubic root of 231500151 is about 614.0217563123.

Adding to 231500151 its reverse (151005132), we get a palindrome (382505283).

The spelling of 231500151 in words is "two hundred thirty-one million, five hundred thousand, one hundred fifty-one".