231001030320 has 80 divisors (see below), whose sum is σ = 716156163072. Its totient is φ = 61595718400.

The previous prime is 231001030313. The next prime is 231001030321. The reversal of 231001030320 is 23030100132.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×231001030320² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 231001030320.

It is not an unprimeable number, because it can be changed into a prime (231001030321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4327795 + ... + 4380845.

Almost surely, 2^231001030320 is an apocalyptic number.

231001030320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231001030320 is an abundant number, since it is smaller than the sum of its proper divisors (485155132752).

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

231001030320 is a wasteful number, since it uses less digits than its factorization.

231001030320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71210 (or 71204 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 231001030320 its reverse (23030100132), we get a palindrome (254031130452).

The spelling of 231001030320 in words is "two hundred thirty-one billion, one million, thirty thousand, three hundred twenty".