2131519400 has 48 divisors (see below), whose sum is σ = 5025615840. Its totient is φ = 840593600.

The previous prime is 2131519399. The next prime is 2131519469. The reversal of 2131519400 is 49151312.

It is a self number, because there is not a number n which added to its sum of digits gives 2131519400.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60854 + ... + 89253.

It is an arithmetic number, because the mean of its divisors is an integer number (104700330).

Almost surely, 2^2131519400 is an apocalyptic number.

2131519400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2131519400 is an abundant number, since it is smaller than the sum of its proper divisors (2894096440).

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

2131519400 is a wasteful number, since it uses less digits than its factorization.

2131519400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150194 (or 150185 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 2131519400 is about 46168.3809549349. The cubic root of 2131519400 is about 1286.9542148934.

The spelling of 2131519400 in words is "two billion, one hundred thirty-one million, five hundred nineteen thousand, four hundred".