11231919 has 32 divisors (see below), whose sum is σ = 17418240. Its totient is φ = 7147296.

The previous prime is 11231911. The next prime is 11231923. The reversal of 11231919 is 91913211.

It is not a de Polignac number, because 11231919 - 2³ = 11231911 is a prime.

It is a super-2 number, since 2×11231919² = 252312008845122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 11231892 and 11231901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11231911) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67174 + ... + 67340.

It is an arithmetic number, because the mean of its divisors is an integer number (544320).

Almost surely, 2^11231919 is an apocalyptic number.

11231919 is a deficient number, since it is larger than the sum of its proper divisors (6186321).

11231919 is a wasteful number, since it uses less digits than its factorization.

11231919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276 (or 270 counting only the distinct ones).

The product of its digits is 486, while the sum is 27.

The square root of 11231919 is about 3351.4055260443. The cubic root of 11231919 is about 223.9501310648.

The spelling of 11231919 in words is "eleven million, two hundred thirty-one thousand, nine hundred nineteen".