20200131001320 has 64 divisors (see below), whose sum is σ = 60658053128640. Its totient is φ = 5381576256000.

The previous prime is 20200131001313. The next prime is 20200131001327. The reversal of 20200131001320 is 2310013100202.

It is an interprime number because it is at equal distance from previous prime (20200131001313) and next prime (20200131001327).

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 20200131001320.

It is not an unprimeable number, because it can be changed into a prime (20200131001327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79956861 + ... + 80209100.

It is an arithmetic number, because the mean of its divisors is an integer number (947782080135).

Almost surely, 2^{20200131001320} is an apocalyptic number.

20200131001320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20200131001320 is an abundant number, since it is smaller than the sum of its proper divisors (40457922127320).

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

20200131001320 is a wasteful number, since it uses less digits than its factorization.

20200131001320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160167026 (or 160167022 counting only the distinct ones).

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

Adding to 20200131001320 its reverse (2310013100202), we get a palindrome (22510144101522).

The spelling of 20200131001320 in words is "twenty trillion, two hundred billion, one hundred thirty-one million, one thousand, three hundred twenty".