231004156 has 6 divisors (see below), whose sum is σ = 404257280. Its totient is φ = 115502076.

The previous prime is 231004153. The next prime is 231004181. The reversal of 231004156 is 651400132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231004153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28875516 + ... + 28875523.

Almost surely, 2^231004156 is an apocalyptic number.

It is an amenable number.

231004156 is a deficient number, since it is larger than the sum of its proper divisors (173253124).

231004156 is a wasteful number, since it uses less digits than its factorization.

231004156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57751043 (or 57751041 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 231004156 is about 15198.8208753179. The cubic root of 231004156 is about 613.5829236488.

Adding to 231004156 its reverse (651400132), we get a palindrome (882404288).

The spelling of 231004156 in words is "two hundred thirty-one million, four thousand, one hundred fifty-six".