11133731 has 6 divisors (see below), whose sum is σ = 12951540. Its totient is φ = 9543156.

The previous prime is 11133719. The next prime is 11133737. The reversal of 11133731 is 13733111.

11133731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11133731 - 2¹⁸ = 10871587 is a prime.

It is a super-2 number, since 2×11133731² = 247919931960722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11133737) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 113561 + ... + 113658.

It is an arithmetic number, because the mean of its divisors is an integer number (2158590).

Almost surely, 2^11133731 is an apocalyptic number.

11133731 is a deficient number, since it is larger than the sum of its proper divisors (1817809).

11133731 is an equidigital number, since it uses as much as digits as its factorization.

11133731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227233 (or 227226 counting only the distinct ones).

The product of its digits is 189, while the sum is 20.

The square root of 11133731 is about 3336.7245915718. The cubic root of 11133731 is about 223.2956390431.

Adding to 11133731 its reverse (13733111), we get a palindrome (24866842).

The spelling of 11133731 in words is "eleven million, one hundred thirty-three thousand, seven hundred thirty-one".