11351791 has 4 divisors (see below), whose sum is σ = 12383784. Its totient is φ = 10319800.

The previous prime is 11351771. The next prime is 11351819. The reversal of 11351791 is 19715311.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11351791 - 2⁷ = 11351663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11351701) 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, 515980 + ... + 516001.

It is an arithmetic number, because the mean of its divisors is an integer number (3095946).

Almost surely, 2^11351791 is an apocalyptic number.

11351791 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11351791 is a deficient number, since it is larger than the sum of its proper divisors (1031993).

11351791 is a wasteful number, since it uses less digits than its factorization.

11351791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1031992.

The product of its digits is 945, while the sum is 28.

The square root of 11351791 is about 3369.2419028618. The cubic root of 11351791 is about 224.7440117467.

It can be divided in two parts, 1135 and 1791, that added together give a triangular number (2926 = T₇₆).

The spelling of 11351791 in words is "eleven million, three hundred fifty-one thousand, seven hundred ninety-one".