2157230151 has 40 divisors (see below), whose sum is σ = 3407505200. Its totient is φ = 1356289920.

The previous prime is 2157230143. The next prime is 2157230323. The reversal of 2157230151 is 1510327512.

It is not a de Polignac number, because 2157230151 - 2³ = 2157230143 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2157238151) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 349371 + ... + 355491.

It is an arithmetic number, because the mean of its divisors is an integer number (85187630).

Almost surely, 2^2157230151 is an apocalyptic number.

2157230151 is a deficient number, since it is larger than the sum of its proper divisors (1250275049).

2157230151 is a wasteful number, since it uses less digits than its factorization.

2157230151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6381 (or 6372 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 27.

The square root of 2157230151 is about 46445.9917646292. The cubic root of 2157230151 is about 1292.1080351899.

Adding to 2157230151 its reverse (1510327512), we get a palindrome (3667557663).

The spelling of 2157230151 in words is "two billion, one hundred fifty-seven million, two hundred thirty thousand, one hundred fifty-one".