10312409 has 2 divisors, whose sum is σ = 10312410. Its totient is φ = 10312408.

The previous prime is 10312397. The next prime is 10312453. The reversal of 10312409 is 90421301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5784025 + 4528384 = 2405^2 + 2128^2 .

It is an emirp because it is prime and its reverse (90421301) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10312409 is a prime.

It is not a weakly prime, because it can be changed into another prime (10312909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5156204 + 5156205.

It is an arithmetic number, because the mean of its divisors is an integer number (5156205).

Almost surely, 2^10312409 is an apocalyptic number.

It is an amenable number.

10312409 is a deficient number, since it is larger than the sum of its proper divisors (1).

10312409 is an equidigital number, since it uses as much as digits as its factorization.

10312409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 10312409 is about 3211.2939759542. The cubic root of 10312409 is about 217.6640520355.

The spelling of 10312409 in words is "ten million, three hundred twelve thousand, four hundred nine".