231321100430 has 128 divisors (see below), whose sum is σ = 501244692480. Its totient is φ = 75190510080.

The previous prime is 231321100429. The next prime is 231321100433. The reversal of 231321100430 is 34001123132.

It is a super-2 number, since 2×231321100430² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231321100433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 28133720 + ... + 28141940.

It is an arithmetic number, because the mean of its divisors is an integer number (3915974160).

Almost surely, 2^231321100430 is an apocalyptic number.

231321100430 is an abundant number, since it is smaller than the sum of its proper divisors (269923592050).

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

231321100430 is a wasteful number, since it uses less digits than its factorization.

231321100430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8514.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 231321100430 its reverse (34001123132), we get a palindrome (265322223562).

The spelling of 231321100430 in words is "two hundred thirty-one billion, three hundred twenty-one million, one hundred thousand, four hundred thirty".