231134281 has 4 divisors (see below), whose sum is σ = 264153472. Its totient is φ = 198115092.

The previous prime is 231134269. The next prime is 231134317. The reversal of 231134281 is 182431132.

It is a happy number.

231134281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 231134281 - 2⁵ = 231134249 is a prime.

It is a super-2 number, since 2×231134281² = 106846111706773922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231134251) 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, 16509585 + ... + 16509598.

It is an arithmetic number, because the mean of its divisors is an integer number (66038368).

Almost surely, 2^231134281 is an apocalyptic number.

It is an amenable number.

231134281 is a deficient number, since it is larger than the sum of its proper divisors (33019191).

231134281 is an equidigital number, since it uses as much as digits as its factorization.

231134281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33019190.

The product of its digits is 1152, while the sum is 25.

The square root of 231134281 is about 15203.1010323552. The cubic root of 231134281 is about 613.6981127609.

The spelling of 231134281 in words is "two hundred thirty-one million, one hundred thirty-four thousand, two hundred eighty-one".