203254431315 has 16 divisors (see below), whose sum is σ = 350223020448. Its totient is φ = 100063719936.

The previous prime is 203254431313. The next prime is 203254431319. The reversal of 203254431315 is 513134452302.

It is not a de Polignac number, because 203254431315 - 2¹ = 203254431313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (203254431313) 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, 521165014 + ... + 521165403.

It is an arithmetic number, because the mean of its divisors is an integer number (21888938778).

Almost surely, 2^203254431315 is an apocalyptic number.

203254431315 is a deficient number, since it is larger than the sum of its proper divisors (146968589133).

203254431315 is a wasteful number, since it uses less digits than its factorization.

203254431315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1042330438.

The product of its (nonzero) digits is 43200, while the sum is 33.

Adding to 203254431315 its reverse (513134452302), we get a palindrome (716388883617).

The spelling of 203254431315 in words is "two hundred three billion, two hundred fifty-four million, four hundred thirty-one thousand, three hundred fifteen".