231234102402220 has 192 divisors, whose sum is σ = 532061182033920. Its totient is φ = 84035328307200.

The previous prime is 231234102402143. The next prime is 231234102402223. The reversal of 231234102402220 is 22204201432132.

It is a super-2 number, since 2×231234102402220² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (231234102402223) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 21899237301 + ... + 21899247859.

It is an arithmetic number, because the mean of its divisors is an integer number (2771151989760).

Almost surely, 2^{231234102402220} is an apocalyptic number.

231234102402220 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 231234102402220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (266030591016960).

231234102402220 is an abundant number, since it is smaller than the sum of its proper divisors (300827079631700).

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

231234102402220 is a wasteful number, since it uses less digits than its factorization.

231234102402220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15584 (or 15582 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 231234102402220 its reverse (22204201432132), we get a palindrome (253438303834352).

The spelling of 231234102402220 in words is "two hundred thirty-one trillion, two hundred thirty-four billion, one hundred two million, four hundred two thousand, two hundred twenty".