203242442397 has 32 divisors (see below), whose sum is σ = 273330288000. Its totient is φ = 134331805440.

The previous prime is 203242442393. The next prime is 203242442411. The reversal of 203242442397 is 793244242302.

It is not a de Polignac number, because 203242442397 - 2² = 203242442393 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203242442393) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 245165379 + ... + 245166207.

It is an arithmetic number, because the mean of its divisors is an integer number (8541571500).

Almost surely, 2^203242442397 is an apocalyptic number.

It is an amenable number.

203242442397 is a deficient number, since it is larger than the sum of its proper divisors (70087845603).

203242442397 is a wasteful number, since it uses less digits than its factorization.

203242442397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2221.

The product of its (nonzero) digits is 580608, while the sum is 42.

Adding to 203242442397 its reverse (793244242302), we get a palindrome (996486684699).

The spelling of 203242442397 in words is "two hundred three billion, two hundred forty-two million, four hundred forty-two thousand, three hundred ninety-seven".