231311150 has 48 divisors (see below), whose sum is σ = 507586560. Its totient is φ = 76744800.

The previous prime is 231311107. The next prime is 231311153. The reversal of 231311150 is 51113132.

231311150 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×231311150² = 107009696228645000, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231311153) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 191 + ... + 21509.

It is an arithmetic number, because the mean of its divisors is an integer number (10574720).

Almost surely, 2^231311150 is an apocalyptic number.

231311150 is an abundant number, since it is smaller than the sum of its proper divisors (276275410).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231311150 is a wasteful number, since it uses less digits than its factorization.

231311150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21369 (or 21364 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 231311150 is about 15208.9167924609. The cubic root of 231311150 is about 613.8546112488.

Adding to 231311150 its reverse (51113132), we get a palindrome (282424282).

The spelling of 231311150 in words is "two hundred thirty-one million, three hundred eleven thousand, one hundred fifty".