201031103129 has 2 divisors, whose sum is σ = 201031103130. Its totient is φ = 201031103128.

The previous prime is 201031103107. The next prime is 201031103137. The reversal of 201031103129 is 921301130102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 194280837529 + 6750265600 = 440773^2 + 82160^2 .

It is a cyclic number.

It is not a de Polignac number, because 201031103129 - 2²⁸ = 200762667673 is a prime.

It is not a weakly prime, because it can be changed into another prime (201031153129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100515551564 + 100515551565.

It is an arithmetic number, because the mean of its divisors is an integer number (100515551565).

Almost surely, 2^201031103129 is an apocalyptic number.

It is an amenable number.

201031103129 is a deficient number, since it is larger than the sum of its proper divisors (1).

201031103129 is an equidigital number, since it uses as much as digits as its factorization.

201031103129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 23.

The spelling of 201031103129 in words is "two hundred one billion, thirty-one million, one hundred three thousand, one hundred twenty-nine".