1101131 has 4 divisors (see below), whose sum is σ = 1103232. Its totient is φ = 1099032.

The previous prime is 1101127. The next prime is 1101143. The reversal of 1101131 is 1311011.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1311011 = 13 ⋅100847.

It is a cyclic number.

It is not a de Polignac number, because 1101131 - 2² = 1101127 is a prime.

It is a super-2 number, since 2×1101131² = 2424978958322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101431) 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, 470 + ... + 1556.

It is an arithmetic number, because the mean of its divisors is an integer number (275808).

2^1101131 is an apocalyptic number.

1101131 is a deficient number, since it is larger than the sum of its proper divisors (2101).

1101131 is a wasteful number, since it uses less digits than its factorization.

1101131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2100.

The product of its (nonzero) digits is 3, while the sum is 8.

The square root of 1101131 is about 1049.3478927410. The cubic root of 1101131 is about 103.2633784821.

Adding to 1101131 its reverse (1311011), we get a palindrome (2412142).

The spelling of 1101131 in words is "one million, one hundred one thousand, one hundred thirty-one".