203030253430 has 32 divisors (see below), whose sum is σ = 371703810816. Its totient is φ = 79828551264.

The previous prime is 203030253421. The next prime is 203030253431. The reversal of 203030253430 is 34352030302.

It is a junction number, because it is equal to n+sod(n) for n = 203030253395 and 203030253404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203030253431) 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 15 ways as a sum of consecutive naturals, for example, 11554 + ... + 637333.

It is an arithmetic number, because the mean of its divisors is an integer number (11615744088).

Almost surely, 2^203030253430 is an apocalyptic number.

203030253430 is a deficient number, since it is larger than the sum of its proper divisors (168673557386).

203030253430 is a wasteful number, since it uses less digits than its factorization.

203030253430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649428.

The product of its (nonzero) digits is 6480, while the sum is 25.

Adding to 203030253430 its reverse (34352030302), we get a palindrome (237382283732).

The spelling of 203030253430 in words is "two hundred three billion, thirty million, two hundred fifty-three thousand, four hundred thirty".