10402813 has 2 divisors, whose sum is σ = 10402814. Its totient is φ = 10402812.

The previous prime is 10402811. The next prime is 10402829. The reversal of 10402813 is 31820401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5963364 + 4439449 = 2442^2 + 2107^2 .

It is an emirp because it is prime and its reverse (31820401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10402813 - 2¹ = 10402811 is a prime.

Together with 10402811, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10402811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5201406 + 5201407.

It is an arithmetic number, because the mean of its divisors is an integer number (5201407).

Almost surely, 2^10402813 is an apocalyptic number.

It is an amenable number.

10402813 is a deficient number, since it is larger than the sum of its proper divisors (1).

10402813 is an equidigital number, since it uses as much as digits as its factorization.

10402813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 10402813 is about 3225.3392069672. The cubic root of 10402813 is about 218.2982548906.

The spelling of 10402813 in words is "ten million, four hundred two thousand, eight hundred thirteen".