203242651923 has 4 divisors (see below), whose sum is σ = 270990202568. Its totient is φ = 135495101280.

The previous prime is 203242651879. The next prime is 203242651951. The reversal of 203242651923 is 329156242302.

It is a happy number.

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

It is not a de Polignac number, because 203242651923 - 2¹² = 203242647827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203242651523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33873775318 + ... + 33873775323.

It is an arithmetic number, because the mean of its divisors is an integer number (67747550642).

Almost surely, 2^203242651923 is an apocalyptic number.

203242651923 is a deficient number, since it is larger than the sum of its proper divisors (67747550645).

203242651923 is an equidigital number, since it uses as much as digits as its factorization.

203242651923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67747550644.

The product of its (nonzero) digits is 155520, while the sum is 39.

The spelling of 203242651923 in words is "two hundred three billion, two hundred forty-two million, six hundred fifty-one thousand, nine hundred twenty-three".