231001420 has 48 divisors (see below), whose sum is σ = 545146560. Its totient is φ = 81582336.

The previous prime is 231001403. The next prime is 231001483. The reversal of 231001420 is 24100132.

231001420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a self number, because there is not a number n which added to its sum of digits gives 231001420.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13335 + ... + 25294.

It is an arithmetic number, because the mean of its divisors is an integer number (11357220).

Almost surely, 2^231001420 is an apocalyptic number.

231001420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231001420 is an abundant number, since it is smaller than the sum of its proper divisors (314145140).

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

231001420 is a wasteful number, since it uses less digits than its factorization.

231001420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38674 (or 38672 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 231001420 is about 15198.7308680692. The cubic root of 231001420 is about 613.5805012256.

Adding to 231001420 its reverse (24100132), we get a palindrome (255101552).

The spelling of 231001420 in words is "two hundred thirty-one million, one thousand, four hundred twenty".