231349965 has 64 divisors (see below), whose sum is σ = 477480960. Its totient is φ = 92816640.

The previous prime is 231349961. The next prime is 231349997. The reversal of 231349965 is 569943132.

It is a happy number.

It is not a de Polignac number, because 231349965 - 2² = 231349961 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231349961) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 30042 + ... + 36948.

It is an arithmetic number, because the mean of its divisors is an integer number (7460640).

Almost surely, 2^231349965 is an apocalyptic number.

It is an amenable number.

231349965 is an abundant number, since it is smaller than the sum of its proper divisors (246130995).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231349965 is a wasteful number, since it uses less digits than its factorization.

231349965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6962.

The product of its digits is 174960, while the sum is 42.

The square root of 231349965 is about 15210.1927995670. The cubic root of 231349965 is about 613.8889451379. Note that the first 3 decimals are identical.

The spelling of 231349965 in words is "two hundred thirty-one million, three hundred forty-nine thousand, nine hundred sixty-five".