231430143320 has 32 divisors (see below), whose sum is σ = 520976938320. Its totient is φ = 92525992320.

The previous prime is 231430143317. The next prime is 231430143409. The reversal of 231430143320 is 23341034132.

231430143320 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×231430143320² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 231430143320.

It is a congruent number.

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, 1358087 + ... + 1518966.

Almost surely, 2^231430143320 is an apocalyptic number.

231430143320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231430143320 is an abundant number, since it is smaller than the sum of its proper divisors (289546795000).

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

231430143320 is a wasteful number, since it uses less digits than its factorization.

231430143320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2879075 (or 2879071 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 231430143320 its reverse (23341034132), we get a palindrome (254771177452).

The spelling of 231430143320 in words is "two hundred thirty-one billion, four hundred thirty million, one hundred forty-three thousand, three hundred twenty".