231434500 has 96 divisors (see below), whose sum is σ = 570810240. Its totient is φ = 81200000.

The previous prime is 231434479. The next prime is 231434503. The reversal of 231434500 is 5434132.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (231434503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 158775 + ... + 160225.

It is an arithmetic number, because the mean of its divisors is an integer number (5945940).

Almost surely, 2^231434500 is an apocalyptic number.

231434500 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 231434500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (285405120).

231434500 is an abundant number, since it is smaller than the sum of its proper divisors (339375740).

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

231434500 is a wasteful number, since it uses less digits than its factorization.

231434500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1510 (or 1498 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 231434500 is about 15212.9714388741. The cubic root of 231434500 is about 613.9637074610.

Adding to 231434500 its reverse (5434132), we get a palindrome (236868632).

The spelling of 231434500 in words is "two hundred thirty-one million, four hundred thirty-four thousand, five hundred".