203152139 has 2 divisors, whose sum is σ = 203152140. Its totient is φ = 203152138.

The previous prime is 203152133. The next prime is 203152181. The reversal of 203152139 is 931251302.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203152139 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (203152133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101576069 + 101576070.

It is an arithmetic number, because the mean of its divisors is an integer number (101576070).

Almost surely, 2^203152139 is an apocalyptic number.

203152139 is a deficient number, since it is larger than the sum of its proper divisors (1).

203152139 is an equidigital number, since it uses as much as digits as its factorization.

203152139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 203152139 is about 14253.1448810429. The cubic root of 203152139 is about 587.8598504042.

The spelling of 203152139 in words is "two hundred three million, one hundred fifty-two thousand, one hundred thirty-nine".