2531322220420 has 48 divisors (see below), whose sum is σ = 6076854161280. Its totient is φ = 867641785344.

The previous prime is 2531322220379. The next prime is 2531322220457. The reversal of 2531322220420 is 240222231352.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

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, 1993050 + ... + 3005809.

It is an arithmetic number, because the mean of its divisors is an integer number (126601128360).

Almost surely, 2^{2531322220420} is an apocalyptic number.

2531322220420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2531322220420 is an abundant number, since it is smaller than the sum of its proper divisors (3545531940860).

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

2531322220420 is a wasteful number, since it uses less digits than its factorization.

2531322220420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5002492 (or 5002490 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

Adding to 2531322220420 its reverse (240222231352), we get a palindrome (2771544451772).

The spelling of 2531322220420 in words is "two trillion, five hundred thirty-one billion, three hundred twenty-two million, two hundred twenty thousand, four hundred twenty".