231043313000 has 32 divisors (see below), whose sum is σ = 540641354760. Its totient is φ = 92417324800.

The previous prime is 231043312987. The next prime is 231043313041. The reversal of 231043313000 is 313340132.

It can be written as a sum of positive squares in 4 ways, for example, as 124246380196 + 106796932804 = 352486^2 + 326798^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115520657 + ... + 115522656.

Almost surely, 2^231043313000 is an apocalyptic number.

231043313000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231043313000 is an abundant number, since it is smaller than the sum of its proper divisors (309598041760).

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

231043313000 is a wasteful number, since it uses less digits than its factorization.

231043313000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231043334 (or 231043320 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 231043313000 its reverse (313340132), we get a palindrome (231356653132).

The spelling of 231043313000 in words is "two hundred thirty-one billion, forty-three million, three hundred thirteen thousand".