203032139 has 4 divisors (see below), whose sum is σ = 214975224. Its totient is φ = 191089056.

The previous prime is 203032079. The next prime is 203032153. The reversal of 203032139 is 931230302.

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 203032139 - 2⁸ = 203031883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203032169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5971517 + ... + 5971550.

It is an arithmetic number, because the mean of its divisors is an integer number (53743806).

Almost surely, 2^203032139 is an apocalyptic number.

203032139 is a deficient number, since it is larger than the sum of its proper divisors (11943085).

203032139 is a wasteful number, since it uses less digits than its factorization.

203032139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11943084.

The product of its (nonzero) digits is 972, while the sum is 23.

The square root of 203032139 is about 14248.9346619317. The cubic root of 203032139 is about 587.7440799006.

The spelling of 203032139 in words is "two hundred three million, thirty-two thousand, one hundred thirty-nine".