231849969 has 8 divisors (see below), whose sum is σ = 332912832. Its totient is φ = 142676880.

The previous prime is 231849967. The next prime is 231849973. The reversal of 231849969 is 969948132.

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

It is not a de Polignac number, because 231849969 - 2¹ = 231849967 is a prime.

It is a super-2 number, since 2×231849969² = 107508816250601922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (231849967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2972397 + ... + 2972474.

It is an arithmetic number, because the mean of its divisors is an integer number (41614104).

Almost surely, 2^231849969 is an apocalyptic number.

It is an amenable number.

231849969 is a deficient number, since it is larger than the sum of its proper divisors (101062863).

231849969 is a wasteful number, since it uses less digits than its factorization.

231849969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5944887.

The product of its digits is 839808, while the sum is 51.

The square root of 231849969 is about 15226.6204063804. The cubic root of 231849969 is about 614.3308817570.

It can be divided in two parts, 23184 and 9969, that added together give a triangular number (33153 = T₂₅₇).

The spelling of 231849969 in words is "two hundred thirty-one million, eight hundred forty-nine thousand, nine hundred sixty-nine".