10203312409 has 2 divisors, whose sum is σ = 10203312410. Its totient is φ = 10203312408.

The previous prime is 10203312403. The next prime is 10203312499. The reversal of 10203312409 is 90421330201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7333353225 + 2869959184 = 85635^2 + 53572^2 .

It is a cyclic number.

It is not a de Polignac number, because 10203312409 - 2³ = 10203312401 is a prime.

It is not a weakly prime, because it can be changed into another prime (10203312401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5101656204 + 5101656205.

It is an arithmetic number, because the mean of its divisors is an integer number (5101656205).

Almost surely, 2^10203312409 is an apocalyptic number.

It is an amenable number.

10203312409 is a deficient number, since it is larger than the sum of its proper divisors (1).

10203312409 is an equidigital number, since it uses as much as digits as its factorization.

10203312409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 25.

The spelling of 10203312409 in words is "ten billion, two hundred three million, three hundred twelve thousand, four hundred nine".