220131310320 has 120 divisors (see below), whose sum is σ = 739458890352. Its totient is φ = 58687027200.

The previous prime is 220131310307. The next prime is 220131310327. The reversal of 220131310320 is 23013131022.

220131310320 is a `hidden beast` number, since 2 + 2 + 0 + 1 + 31 + 310 + 320 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 220131310293 and 220131310302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220131310327) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3017475 + ... + 3089565.

Almost surely, 2^220131310320 is an apocalyptic number.

220131310320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220131310320 is an abundant number, since it is smaller than the sum of its proper divisors (519327580032).

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

220131310320 is a wasteful number, since it uses less digits than its factorization.

220131310320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76351 (or 76342 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 220131310320 its reverse (23013131022), we get a palindrome (243144441342).

The spelling of 220131310320 in words is "two hundred twenty billion, one hundred thirty-one million, three hundred ten thousand, three hundred twenty".