231240310 has 40 divisors (see below), whose sum is σ = 485626176. Its totient is φ = 79274160.

The previous prime is 231240281. The next prime is 231240311. The reversal of 231240310 is 13042132.

It is a happy number.

It is a super-2 number, since 2×231240310² = 106944161937792200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231240311) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 19195 + ... + 28825.

Almost surely, 2^231240310 is an apocalyptic number.

231240310 is an abundant number, since it is smaller than the sum of its proper divisors (254385866).

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

231240310 is an frugal number, since it uses more digits than its factorization.

231240310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9666 (or 9645 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 231240310 is about 15206.5877171705. The cubic root of 231240310 is about 613.7919396762.

Adding to 231240310 its reverse (13042132), we get a palindrome (244282442).

The spelling of 231240310 in words is "two hundred thirty-one million, two hundred forty thousand, three hundred ten".