11919431 has 8 divisors (see below), whose sum is σ = 12694320. Its totient is φ = 11152768.

The previous prime is 11919421. The next prime is 11919437. The reversal of 11919431 is 13491911.

11919431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11919431 - 2¹⁸ = 11657287 is a prime.

It is a super-2 number, since 2×11919431² = 284145670727522, 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 = 11919394 and 11919403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11919437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1085 + ... + 5001.

It is an arithmetic number, because the mean of its divisors is an integer number (1586790).

Almost surely, 2^11919431 is an apocalyptic number.

11919431 is a deficient number, since it is larger than the sum of its proper divisors (774889).

11919431 is a wasteful number, since it uses less digits than its factorization.

11919431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4113.

The product of its digits is 972, while the sum is 29.

The square root of 11919431 is about 3452.4528961305. The cubic root of 11919431 is about 228.4293170379.

The spelling of 11919431 in words is "eleven million, nine hundred nineteen thousand, four hundred thirty-one".