203424243100 has 36 divisors (see below), whose sum is σ = 475386811144. Its totient is φ = 75110489280.

The previous prime is 203424243097. The next prime is 203424243103. The reversal of 203424243100 is 1342424302.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (203424243097) and next prime (203424243103).

It is a super-2 number, since 2×203424243100² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203424243103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 78238794 + ... + 78241393.

Almost surely, 2^203424243100 is an apocalyptic number.

203424243100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203424243100 is an abundant number, since it is smaller than the sum of its proper divisors (271962568044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

203424243100 is a wasteful number, since it uses less digits than its factorization.

203424243100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156480214 (or 156480207 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 203424243100 its reverse (1342424302), we get a palindrome (204766667402).

The spelling of 203424243100 in words is "two hundred three billion, four hundred twenty-four million, two hundred forty-three thousand, one hundred".