230202139 has 4 divisors (see below), whose sum is σ = 230245120. Its totient is φ = 230159160.

The previous prime is 230202127. The next prime is 230202163. The reversal of 230202139 is 931202032.

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 230202139 - 2⁹ = 230201627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (230202109) 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, 12084 + ... + 24625.

It is an arithmetic number, because the mean of its divisors is an integer number (57561280).

Almost surely, 2^230202139 is an apocalyptic number.

230202139 is a deficient number, since it is larger than the sum of its proper divisors (42981).

230202139 is an equidigital number, since it uses as much as digits as its factorization.

230202139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42980.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 230202139 is about 15172.4137499608. The cubic root of 230202139 is about 612.8720063611.

The spelling of 230202139 in words is "two hundred thirty million, two hundred two thousand, one hundred thirty-nine".