11207391 has 32 divisors (see below), whose sum is σ = 16972032. Its totient is φ = 6531840.

The previous prime is 11207387. The next prime is 11207393. The reversal of 11207391 is 19370211.

11207391 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11207391 - 2² = 11207387 is a prime.

It is a super-2 number, since 2×11207391² = 251211226053762, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11207393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68676 + ... + 68838.

It is an arithmetic number, because the mean of its divisors is an integer number (530376).

Almost surely, 2^11207391 is an apocalyptic number.

11207391 is a deficient number, since it is larger than the sum of its proper divisors (5764641).

11207391 is a wasteful number, since it uses less digits than its factorization.

11207391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263.

The product of its (nonzero) digits is 378, while the sum is 24.

The square root of 11207391 is about 3347.7441658526. The cubic root of 11207391 is about 223.7869932489.

Subtracting 11207391 from its reverse (19370211), we obtain a triangular number (8162820 = T₄₀₄₀).

The spelling of 11207391 in words is "eleven million, two hundred seven thousand, three hundred ninety-one".