11204531 has 12 divisors (see below), whose sum is σ = 12236112. Its totient is φ = 10254816.

The previous prime is 11204503. The next prime is 11204537. The reversal of 11204531 is 13540211.

It is a de Polignac number, because none of the positive numbers 2^k-11204531 is a prime.

It is a super-2 number, since 2×11204531² = 251083029859922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11204537) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28025 + ... + 28421.

It is an arithmetic number, because the mean of its divisors is an integer number (1019676).

Almost surely, 2^11204531 is an apocalyptic number.

11204531 is a deficient number, since it is larger than the sum of its proper divisors (1031581).

11204531 is a wasteful number, since it uses less digits than its factorization.

11204531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590 (or 577 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 11204531 is about 3347.3169852884. The cubic root of 11204531 is about 223.7679556557.

Adding to 11204531 its reverse (13540211), we get a palindrome (24744742).

The spelling of 11204531 in words is "eleven million, two hundred four thousand, five hundred thirty-one".