231001134 has 128 divisors (see below), whose sum is σ = 617766912. Its totient is φ = 55848960.

The previous prime is 231001097. The next prime is 231001139. The reversal of 231001134 is 431100132.

231001134 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231001139) 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, 380259 + ... + 380865.

It is an arithmetic number, because the mean of its divisors is an integer number (4826304).

Almost surely, 2^231001134 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231001134, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (308883456).

231001134 is an abundant number, since it is smaller than the sum of its proper divisors (386765778).

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

231001134 is a wasteful number, since it uses less digits than its factorization.

231001134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 231001134 is about 15198.7214593860. The cubic root of 231001134 is about 613.5802480033.

Adding to 231001134 its reverse (431100132), we get a palindrome (662101266).

The spelling of 231001134 in words is "two hundred thirty-one million, one thousand, one hundred thirty-four".