2157214330 has 32 divisors (see below), whose sum is σ = 4017134736. Its totient is φ = 833416704.

The previous prime is 2157214289. The next prime is 2157214333. The reversal of 2157214330 is 334127512.

2157214330 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 2029772809 + 127441521 = 45053^2 + 11289^2 .

It is not an unprimeable number, because it can be changed into a prime (2157214333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29412 + ... + 71968.

Almost surely, 2^2157214330 is an apocalyptic number.

2157214330 is a deficient number, since it is larger than the sum of its proper divisors (1859920406).

2157214330 is a wasteful number, since it uses less digits than its factorization.

2157214330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42738.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 2157214330 is about 46445.8214482207. The cubic root of 2157214330 is about 1292.1048764339.

The spelling of 2157214330 in words is "two billion, one hundred fifty-seven million, two hundred fourteen thousand, three hundred thirty".