2138351 has 4 divisors (see below), whose sum is σ = 2141832. Its totient is φ = 2134872.

The previous prime is 2138327. The next prime is 2138363. The reversal of 2138351 is 1538312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2138351 - 2¹⁰ = 2137327 is a prime.

It is a super-3 number, since 3×2138351³ = 29333118514759372653, which contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2138321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 545 + ... + 2138.

It is an arithmetic number, because the mean of its divisors is an integer number (535458).

2^2138351 is an apocalyptic number.

2138351 is a deficient number, since it is larger than the sum of its proper divisors (3481).

2138351 is an equidigital number, since it uses as much as digits as its factorization.

2138351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3480.

The product of its digits is 720, while the sum is 23.

The square root of 2138351 is about 1462.3101586189. The cubic root of 2138351 is about 128.8327660873.

The spelling of 2138351 in words is "two million, one hundred thirty-eight thousand, three hundred fifty-one".