203113122251 has 16 divisors (see below), whose sum is σ = 230350058400. Its totient is φ = 177543767808.

The previous prime is 203113122217. The next prime is 203113122263. The reversal of 203113122251 is 152221311302.

It is not a de Polignac number, because 203113122251 - 2³⁰ = 202039380427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203113125251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 392255 + ... + 748391.

It is an arithmetic number, because the mean of its divisors is an integer number (14396878650).

Almost surely, 2^203113122251 is an apocalyptic number.

203113122251 is a deficient number, since it is larger than the sum of its proper divisors (27236936149).

203113122251 is a wasteful number, since it uses less digits than its factorization.

203113122251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358478.

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 203113122251 its reverse (152221311302), we get a palindrome (355334433553).

The spelling of 203113122251 in words is "two hundred three billion, one hundred thirteen million, one hundred twenty-two thousand, two hundred fifty-one".