203112901 has 2 divisors, whose sum is σ = 203112902. Its totient is φ = 203112900.

The previous prime is 203112883. The next prime is 203112913. The reversal of 203112901 is 109211302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 136282276 + 66830625 = 11674^2 + 8175^2 .

It is a cyclic number.

It is not a de Polignac number, because 203112901 - 2⁹ = 203112389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203112971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101556450 + 101556451.

It is an arithmetic number, because the mean of its divisors is an integer number (101556451).

Almost surely, 2^203112901 is an apocalyptic number.

It is an amenable number.

203112901 is a deficient number, since it is larger than the sum of its proper divisors (1).

203112901 is an equidigital number, since it uses as much as digits as its factorization.

203112901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 203112901 is about 14251.7683464193. The cubic root of 203112901 is about 587.8220003965.

The spelling of 203112901 in words is "two hundred three million, one hundred twelve thousand, nine hundred one".