203431142129 has 2 divisors, whose sum is σ = 203431142130. Its totient is φ = 203431142128.

The previous prime is 203431142111. The next prime is 203431142191. The reversal of 203431142129 is 921241134302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 203087225104 + 343917025 = 450652^2 + 18545^2 .

It is a cyclic number.

It is not a de Polignac number, because 203431142129 - 2²⁰ = 203430093553 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 203431142095 and 203431142104.

It is not a weakly prime, because it can be changed into another prime (203431142429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101715571064 + 101715571065.

It is an arithmetic number, because the mean of its divisors is an integer number (101715571065).

Almost surely, 2^203431142129 is an apocalyptic number.

It is an amenable number.

203431142129 is a deficient number, since it is larger than the sum of its proper divisors (1).

203431142129 is an equidigital number, since it uses as much as digits as its factorization.

203431142129 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 32.

The spelling of 203431142129 in words is "two hundred three billion, four hundred thirty-one million, one hundred forty-two thousand, one hundred twenty-nine".