2306139 has 12 divisors (see below), whose sum is σ = 3380328. Its totient is φ = 1397440.

The previous prime is 2306131. The next prime is 2306147. The reversal of 2306139 is 9316032.

2306139 is an esthetic number in base 6, because in such base its adjacent digits differ by 1.

It is an interprime number because it is at equal distance from previous prime (2306131) and next prime (2306147).

It is not a de Polignac number, because 2306139 - 2³ = 2306131 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors.

2306139 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2306131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2814 + ... + 3539.

It is an arithmetic number, because the mean of its divisors is an integer number (281694).

2^2306139 is an apocalyptic number.

2306139 is a deficient number, since it is larger than the sum of its proper divisors (1074189).

2306139 is a wasteful number, since it uses less digits than its factorization.

2306139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6378 (or 6367 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 24.

The square root of 2306139 is about 1518.5977084139. The cubic root of 2306139 is about 132.1179501285.

The spelling of 2306139 in words is "two million, three hundred six thousand, one hundred thirty-nine".