11031397 has 12 divisors (see below), whose sum is σ = 12315940. Its totient is φ = 9821952.

The previous prime is 11031389. The next prime is 11031401. The reversal of 11031397 is 79313011.

It can be written as a sum of positive squares in 6 ways, for example, as 784996 + 10246401 = 886^2 + 3201^2 .

It is not a de Polignac number, because 11031397 - 2³ = 11031389 is a prime.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11031497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10429 + ... + 11437.

Almost surely, 2^11031397 is an apocalyptic number.

It is an amenable number.

11031397 is a deficient number, since it is larger than the sum of its proper divisors (1284543).

11031397 is a wasteful number, since it uses less digits than its factorization.

11031397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1080 (or 1051 counting only the distinct ones).

The product of its (nonzero) digits is 567, while the sum is 25.

The square root of 11031397 is about 3321.3546934948. The cubic root of 11031397 is about 222.6094029164.

It can be divided in two parts, 1103 and 1397, that added together give a square (2500 = 50²).

The spelling of 11031397 in words is "eleven million, thirty-one thousand, three hundred ninety-seven".