2129311398 has 16 divisors (see below), whose sum is σ = 4260980736. Its totient is φ = 709377480.

The previous prime is 2129311369. The next prime is 2129311417. The reversal of 2129311398 is 8931139212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86398 + ... + 108273.

It is an arithmetic number, because the mean of its divisors is an integer number (266311296).

Almost surely, 2^2129311398 is an apocalyptic number.

2129311398 is an abundant number, since it is smaller than the sum of its proper divisors (2131669338).

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

2129311398 is a wasteful number, since it uses less digits than its factorization.

2129311398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196499.

The product of its digits is 23328, while the sum is 39.

The square root of 2129311398 is about 46144.4622679688. The cubic root of 2129311398 is about 1286.5096839121.

The spelling of 2129311398 in words is "two billion, one hundred twenty-nine million, three hundred eleven thousand, three hundred ninety-eight".