231461340 has 48 divisors (see below), whose sum is σ = 707011200. Its totient is φ = 56111680.

The previous prime is 231461339. The next prime is 231461357. The reversal of 231461340 is 43164132.

It is a self number, because there is not a number n which added to its sum of digits gives 231461340.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 174690 + ... + 176009.

It is an arithmetic number, because the mean of its divisors is an integer number (14729400).

Almost surely, 2^231461340 is an apocalyptic number.

231461340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231461340 is an abundant number, since it is smaller than the sum of its proper divisors (475549860).

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

231461340 is a wasteful number, since it uses less digits than its factorization.

231461340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350722 (or 350720 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 231461340 is about 15213.8535552305. The cubic root of 231461340 is about 613.9874408123.

The spelling of 231461340 in words is "two hundred thirty-one million, four hundred sixty-one thousand, three hundred forty".