2157305371 has 8 divisors (see below), whose sum is σ = 2326885344. Its totient is φ = 1988244480.

The previous prime is 2157305363. The next prime is 2157305383. The reversal of 2157305371 is 1735037512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2157305371 - 2³ = 2157305363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2157305341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121111 + ... + 137776.

It is an arithmetic number, because the mean of its divisors is an integer number (290860668).

Almost surely, 2^2157305371 is an apocalyptic number.

2157305371 is a deficient number, since it is larger than the sum of its proper divisors (169579973).

2157305371 is a wasteful number, since it uses less digits than its factorization.

2157305371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259541.

The product of its (nonzero) digits is 22050, while the sum is 34.

The square root of 2157305371 is about 46446.8015152820. The cubic root of 2157305371 is about 1292.1230530956.

The spelling of 2157305371 in words is "two billion, one hundred fifty-seven million, three hundred five thousand, three hundred seventy-one".