11798531 has 4 divisors (see below), whose sum is σ = 11816064. Its totient is φ = 11781000.

The previous prime is 11798519. The next prime is 11798539. The reversal of 11798531 is 13589711.

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 11798531 - 2⁶ = 11798467 is a prime.

It is a super-2 number, since 2×11798531² = 278410667515922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11798491 and 11798500.

It is not an unprimeable number, because it can be changed into a prime (11798539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7715 + ... + 9116.

It is an arithmetic number, because the mean of its divisors is an integer number (2954016).

Almost surely, 2^11798531 is an apocalyptic number.

11798531 is a deficient number, since it is larger than the sum of its proper divisors (17533).

11798531 is an equidigital number, since it uses as much as digits as its factorization.

11798531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17532.

The product of its digits is 7560, while the sum is 35.

The square root of 11798531 is about 3434.8989795917. The cubic root of 11798531 is about 227.6543636991.

The spelling of 11798531 in words is "eleven million, seven hundred ninety-eight thousand, five hundred thirty-one".