2157631300 has 36 divisors (see below), whose sum is σ = 5107704336. Its totient is φ = 784592800.

The previous prime is 2157631277. The next prime is 2157631363. The reversal of 2157631300 is 31367512.

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 11 ways as a sum of consecutive naturals, for example, 979642 + ... + 981841.

It is an arithmetic number, because the mean of its divisors is an integer number (141880676).

Almost surely, 2^2157631300 is an apocalyptic number.

2157631300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2157631300 is an abundant number, since it is smaller than the sum of its proper divisors (2950073036).

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

2157631300 is a wasteful number, since it uses less digits than its factorization.

2157631300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1961508 (or 1961501 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 2157631300 is about 46450.3100097298. The cubic root of 2157631300 is about 1292.1881217955.

Adding to 2157631300 its reverse (31367512), we get a palindrome (2188998812).

The spelling of 2157631300 in words is "two billion, one hundred fifty-seven million, six hundred thirty-one thousand, three hundred".