2131430600 has 48 divisors (see below), whose sum is σ = 5336780820. Its totient is φ = 786988800.

The previous prime is 2131430597. The next prime is 2131430617. The reversal of 2131430600 is 60341312.

It can be written as a sum of positive squares in 6 ways, for example, as 22600516 + 2108830084 = 4754^2 + 45922^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 407291 + ... + 412490.

Almost surely, 2^2131430600 is an apocalyptic number.

2131430600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2131430600 is an abundant number, since it is smaller than the sum of its proper divisors (3205350220).

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

2131430600 is a wasteful number, since it uses less digits than its factorization.

2131430600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 819810 (or 819801 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 2131430600 is about 46167.4192477769. The cubic root of 2131430600 is about 1286.9363429595.

Adding to 2131430600 its reverse (60341312), we get a palindrome (2191771912).

The spelling of 2131430600 in words is "two billion, one hundred thirty-one million, four hundred thirty thousand, six hundred".