11197631 has 4 divisors (see below), whose sum is σ = 11787000. Its totient is φ = 10608264.

The previous prime is 11197621. The next prime is 11197649. The reversal of 11197631 is 13679111.

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 11197631 - 2²² = 7003327 is a prime.

It is a super-2 number, since 2×11197631² = 250773880024322, 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 = 11197594 and 11197603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11197601) 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, 294656 + ... + 294693.

It is an arithmetic number, because the mean of its divisors is an integer number (2946750).

Almost surely, 2^11197631 is an apocalyptic number.

11197631 is a deficient number, since it is larger than the sum of its proper divisors (589369).

11197631 is an equidigital number, since it uses as much as digits as its factorization.

11197631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589368.

The product of its digits is 1134, while the sum is 29.

The square root of 11197631 is about 3346.2861503464. The cubic root of 11197631 is about 223.7220124581.

The spelling of 11197631 in words is "eleven million, one hundred ninety-seven thousand, six hundred thirty-one".