203692431097 has 4 divisors (see below), whose sum is σ = 203699793060. Its totient is φ = 203685069136.

The previous prime is 203692431071. The next prime is 203692431109. The reversal of 203692431097 is 790134296302.

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

It can be written as a sum of positive squares in 2 ways, for example, as 148919581801 + 54772849296 = 385901^2 + 234036^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203692431097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203692431997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3639322 + ... + 3694867.

It is an arithmetic number, because the mean of its divisors is an integer number (50924948265).

Almost surely, 2^203692431097 is an apocalyptic number.

It is an amenable number.

203692431097 is a deficient number, since it is larger than the sum of its proper divisors (7361963).

203692431097 is an equidigital number, since it uses as much as digits as its factorization.

203692431097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7361962.

The product of its (nonzero) digits is 489888, while the sum is 46.

The spelling of 203692431097 in words is "two hundred three billion, six hundred ninety-two million, four hundred thirty-one thousand, ninety-seven".