10997813 has 2 divisors, whose sum is σ = 10997814. Its totient is φ = 10997812.

The previous prime is 10997807. The next prime is 10997821. The reversal of 10997813 is 31879901.

10997813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9878449 + 1119364 = 3143^2 + 1058^2 .

It is a cyclic number.

It is not a de Polignac number, because 10997813 - 2⁴ = 10997797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10997863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5498906 + 5498907.

It is an arithmetic number, because the mean of its divisors is an integer number (5498907).

Almost surely, 2^10997813 is an apocalyptic number.

It is an amenable number.

10997813 is a deficient number, since it is larger than the sum of its proper divisors (1).

10997813 is an equidigital number, since it uses as much as digits as its factorization.

10997813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 38.

The square root of 10997813 is about 3316.2950713108. The cubic root of 10997813 is about 222.3832691574.

The spelling of 10997813 in words is "ten million, nine hundred ninety-seven thousand, eight hundred thirteen".