231156869 has 8 divisors (see below), whose sum is σ = 244008000. Its totient is φ = 218374272.

The previous prime is 231156859. The next prime is 231156881. The reversal of 231156869 is 968651132.

231156869 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 231156869 - 2⁸ = 231156613 is a prime.

It is a super-2 number, since 2×231156869² = 106866996171766322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231156839) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10124 + ... + 23765.

It is an arithmetic number, because the mean of its divisors is an integer number (30501000).

Almost surely, 2^231156869 is an apocalyptic number.

It is an amenable number.

231156869 is a deficient number, since it is larger than the sum of its proper divisors (12851131).

231156869 is a wasteful number, since it uses less digits than its factorization.

231156869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34267.

The product of its digits is 77760, while the sum is 41.

The square root of 231156869 is about 15203.8438889644. The cubic root of 231156869 is about 613.7181036818.

The spelling of 231156869 in words is "two hundred thirty-one million, one hundred fifty-six thousand, eight hundred sixty-nine".