11351391 has 4 divisors (see below), whose sum is σ = 15135192. Its totient is φ = 7567592.

The previous prime is 11351339. The next prime is 11351399. The reversal of 11351391 is 19315311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19315311 = 3 ⋅6438437.

It is a cyclic number.

It is not a de Polignac number, because 11351391 - 2¹⁴ = 11335007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11351399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1891896 + ... + 1891901.

It is an arithmetic number, because the mean of its divisors is an integer number (3783798).

Almost surely, 2^11351391 is an apocalyptic number.

11351391 is a deficient number, since it is larger than the sum of its proper divisors (3783801).

11351391 is an equidigital number, since it uses as much as digits as its factorization.

11351391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3783800.

The product of its digits is 405, while the sum is 24.

The square root of 11351391 is about 3369.1825418045. The cubic root of 11351391 is about 224.7413719677.

The spelling of 11351391 in words is "eleven million, three hundred fifty-one thousand, three hundred ninety-one".