231430213100 has 36 divisors (see below), whose sum is σ = 502383720384. Its totient is φ = 92538876480.

The previous prime is 231430213093. The next prime is 231430213109. The reversal of 231430213100 is 1312034132.

It is a super-2 number, since 2×231430213100² (a number of 24 digits) contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (231430213109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 134012 + ... + 693411.

It is an arithmetic number, because the mean of its divisors is an integer number (13955103344).

Almost surely, 2^231430213100 is an apocalyptic number.

231430213100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231430213100 is an abundant number, since it is smaller than the sum of its proper divisors (270953507284).

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

231430213100 is a wasteful number, since it uses less digits than its factorization.

231430213100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 830234 (or 830227 counting only the distinct ones).

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

Adding to 231430213100 its reverse (1312034132), we get a palindrome (232742247232).

The spelling of 231430213100 in words is "two hundred thirty-one billion, four hundred thirty million, two hundred thirteen thousand, one hundred".