2631220213140 has 72 divisors (see below), whose sum is σ = 7981501131240. Its totient is φ = 701647017984.

The previous prime is 2631220213117. The next prime is 2631220213187. The reversal of 2631220213140 is 413120221362.

2631220213140 is a `hidden beast` number, since 2 + 6 + 312 + 202 + 1 + 3 + 140 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 101040065424 + 2530180147716 = 317868^2 + 1590654^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19034352 + ... + 19172088.

Almost surely, 2^{2631220213140} is an apocalyptic number.

2631220213140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2631220213140 is an abundant number, since it is smaller than the sum of its proper divisors (5350280918100).

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

2631220213140 is a wasteful number, since it uses less digits than its factorization.

2631220213140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243881 (or 243876 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The spelling of 2631220213140 in words is "two trillion, six hundred thirty-one billion, two hundred twenty million, two hundred thirteen thousand, one hundred forty".