203404130203231 has 2 divisors, whose sum is σ = 203404130203232. Its totient is φ = 203404130203230.

The previous prime is 203404130203199. The next prime is 203404130203237. The reversal of 203404130203231 is 132302031404302.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 203404130203231 - 2⁵ = 203404130203199 is a prime.

It is a super-2 number, since 2×203404130203231² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 203404130203231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203404130203237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101702065101615 + 101702065101616.

It is an arithmetic number, because the mean of its divisors is an integer number (101702065101616).

Almost surely, 2^{203404130203231} is an apocalyptic number.

203404130203231 is a deficient number, since it is larger than the sum of its proper divisors (1).

203404130203231 is an equidigital number, since it uses as much as digits as its factorization.

203404130203231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 203404130203231 its reverse (132302031404302), we get a palindrome (335706161607533).

The spelling of 203404130203231 in words is "two hundred three trillion, four hundred four billion, one hundred thirty million, two hundred three thousand, two hundred thirty-one".