203152111115 has 4 divisors (see below), whose sum is σ = 243782533344. Its totient is φ = 162521688888.

The previous prime is 203152111093. The next prime is 203152111147. The reversal of 203152111115 is 511111251302.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 511111251302 = 2 ⋅255555625651.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203152111115 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20315211107 + ... + 20315211116.

It is an arithmetic number, because the mean of its divisors is an integer number (60945633336).

Almost surely, 2^203152111115 is an apocalyptic number.

203152111115 is a deficient number, since it is larger than the sum of its proper divisors (40630422229).

203152111115 is an equidigital number, since it uses as much as digits as its factorization.

203152111115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40630422228.

The product of its (nonzero) digits is 300, while the sum is 23.

Adding to 203152111115 its reverse (511111251302), we get a palindrome (714263362417).

The spelling of 203152111115 in words is "two hundred three billion, one hundred fifty-two million, one hundred eleven thousand, one hundred fifteen".