320231531262260 has 96 divisors (see below), whose sum is σ = 719518415954688. Its totient is φ = 119294851737600.

The previous prime is 320231531262259. The next prime is 320231531262301. The reversal of 320231531262260 is 62262135132023.

It is a super-2 number, since 2×320231531262260² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26886785 + ... + 36923735.

It is an arithmetic number, because the mean of its divisors is an integer number (7494983499528).

Almost surely, 2^{320231531262260} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 320231531262260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (359759207977344).

320231531262260 is an abundant number, since it is smaller than the sum of its proper divisors (399286884692428).

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

320231531262260 is a wasteful number, since it uses less digits than its factorization.

320231531262260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10037961 (or 10037959 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 38.

Adding to 320231531262260 its reverse (62262135132023), we get a palindrome (382493666394283).

The spelling of 320231531262260 in words is "three hundred twenty trillion, two hundred thirty-one billion, five hundred thirty-one million, two hundred sixty-two thousand, two hundred sixty".