11620331 has 4 divisors (see below), whose sum is σ = 11934432. Its totient is φ = 11306232.

The previous prime is 11620289. The next prime is 11620339. The reversal of 11620331 is 13302611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13302611 = 7 ⋅1900373.

It is a cyclic number.

It is not a de Polignac number, because 11620331 - 2¹⁴ = 11603947 is a prime.

It is a super-2 number, since 2×11620331² = 270064185099122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11620339) 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, 156995 + ... + 157068.

It is an arithmetic number, because the mean of its divisors is an integer number (2983608).

Almost surely, 2^11620331 is an apocalyptic number.

11620331 is a deficient number, since it is larger than the sum of its proper divisors (314101).

11620331 is an equidigital number, since it uses as much as digits as its factorization.

11620331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314100.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 11620331 is about 3408.8606601033. The cubic root of 11620331 is about 226.5024129614.

Adding to 11620331 its reverse (13302611), we get a palindrome (24922942).

The spelling of 11620331 in words is "eleven million, six hundred twenty thousand, three hundred thirty-one".