231896931 has 8 divisors (see below), whose sum is σ = 353366784. Its totient is φ = 132512520.

The previous prime is 231896869. The next prime is 231896933. The reversal of 231896931 is 139698132.

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

It is not a de Polignac number, because 231896931 - 2⁶ = 231896867 is a prime.

It is a super-2 number, since 2×231896931² = 107552373214437522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (231896933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5521335 + ... + 5521376.

It is an arithmetic number, because the mean of its divisors is an integer number (44170848).

Almost surely, 2^231896931 is an apocalyptic number.

231896931 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

231896931 is a deficient number, since it is larger than the sum of its proper divisors (121469853).

231896931 is a wasteful number, since it uses less digits than its factorization.

231896931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11042721.

The product of its digits is 69984, while the sum is 42.

The square root of 231896931 is about 15228.1624301818. The cubic root of 231896931 is about 614.3723572268.

The spelling of 231896931 in words is "two hundred thirty-one million, eight hundred ninety-six thousand, nine hundred thirty-one".