231545434430200 has 96 divisors (see below), whose sum is σ = 587287140570000. Its totient is φ = 84197806387200.

The previous prime is 231545434430183. The next prime is 231545434430203. The reversal of 231545434430200 is 2034434545132.

It is a super-2 number, since 2×231545434430200² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231545434430203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 564334726 + ... + 564744874.

Almost surely, 2^{231545434430200} is an apocalyptic number.

231545434430200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231545434430200 is an abundant number, since it is smaller than the sum of its proper divisors (355741706139800).

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

231545434430200 is a wasteful number, since it uses less digits than its factorization.

231545434430200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666785 (or 666776 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 40.

Adding to 231545434430200 its reverse (2034434545132), we get a palindrome (233579868975332).

The spelling of 231545434430200 in words is "two hundred thirty-one trillion, five hundred forty-five billion, four hundred thirty-four million, four hundred thirty thousand, two hundred".