220131312000 has 128 divisors (see below), whose sum is σ = 729735458400. Its totient is φ = 58701670400.

The previous prime is 220131311977. The next prime is 220131312029. The reversal of 220131312000 is 213131022.

It is a tau number, because it is divible by the number of its divisors (128).

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2245035 + ... + 2341034.

Almost surely, 2^220131312000 is an apocalyptic number.

220131312000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220131312000 is an abundant number, since it is smaller than the sum of its proper divisors (509604146400).

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

220131312000 is an equidigital number, since it uses as much as digits as its factorization.

220131312000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4586101 (or 4586079 counting only the distinct ones).

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

Adding to 220131312000 its reverse (213131022), we get a palindrome (220344443022).

The spelling of 220131312000 in words is "two hundred twenty billion, one hundred thirty-one million, three hundred twelve thousand".