11331388 has 6 divisors (see below), whose sum is σ = 19829936. Its totient is φ = 5665692.

The previous prime is 11331379. The next prime is 11331389. The reversal of 11331388 is 88313311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11331389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1416420 + ... + 1416427.

Almost surely, 2^11331388 is an apocalyptic number.

It is an amenable number.

11331388 is a deficient number, since it is larger than the sum of its proper divisors (8498548).

11331388 is a wasteful number, since it uses less digits than its factorization.

11331388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2832851 (or 2832849 counting only the distinct ones).

The product of its digits is 1728, while the sum is 28.

The square root of 11331388 is about 3366.2127086683. The cubic root of 11331388 is about 224.6092840484.

Adding to 11331388 its reverse (88313311), we get a palindrome (99644699).

The spelling of 11331388 in words is "eleven million, three hundred thirty-one thousand, three hundred eighty-eight".