231879231 has 12 divisors (see below), whose sum is σ = 343106400. Its totient is φ = 150815520.

The previous prime is 231879229. The next prime is 231879251. The reversal of 231879231 is 132978132.

It is not a de Polignac number, because 231879231 - 2¹ = 231879229 is a prime.

It is a super-3 number, since 3×231879231³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231879251) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 313831 + ... + 314568.

It is an arithmetic number, because the mean of its divisors is an integer number (28592200).

Almost surely, 2^231879231 is an apocalyptic number.

231879231 is a deficient number, since it is larger than the sum of its proper divisors (111227169).

231879231 is a wasteful number, since it uses less digits than its factorization.

231879231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628446 (or 628443 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 231879231 is about 15227.5812590181. The cubic root of 231879231 is about 614.3567257602.

The spelling of 231879231 in words is "two hundred thirty-one million, eight hundred seventy-nine thousand, two hundred thirty-one".