231461535400 has 96 divisors (see below), whose sum is σ = 547249214880. Its totient is φ = 91020384000.

The previous prime is 231461535379. The next prime is 231461535421. The reversal of 231461535400 is 4535164132.

It is an interprime number because it is at equal distance from previous prime (231461535379) and next prime (231461535421).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33314727 + ... + 33321673.

It is an arithmetic number, because the mean of its divisors is an integer number (5700512655).

Almost surely, 2^231461535400 is an apocalyptic number.

231461535400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231461535400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (273624607440).

231461535400 is an abundant number, since it is smaller than the sum of its proper divisors (315787679480).

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

231461535400 is a wasteful number, since it uses less digits than its factorization.

231461535400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9755 (or 9746 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 34.

Adding to 231461535400 its reverse (4535164132), we get a palindrome (235996699532).

The spelling of 231461535400 in words is "two hundred thirty-one billion, four hundred sixty-one million, five hundred thirty-five thousand, four hundred".