11400531 has 4 divisors (see below), whose sum is σ = 15200712. Its totient is φ = 7600352.

The previous prime is 11400517. The next prime is 11400533. The reversal of 11400531 is 13500411.

11400531 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13500411 = 3 ⋅4500137.

It is a cyclic number.

It is not a de Polignac number, because 11400531 - 2²³ = 3011923 is a prime.

It is a super-2 number, since 2×11400531² = 259944214163922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11400531.

It is not an unprimeable number, because it can be changed into a prime (11400533) 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, 1900086 + ... + 1900091.

It is an arithmetic number, because the mean of its divisors is an integer number (3800178).

Almost surely, 2^11400531 is an apocalyptic number.

11400531 is a deficient number, since it is larger than the sum of its proper divisors (3800181).

11400531 is an equidigital number, since it uses as much as digits as its factorization.

11400531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3800180.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 11400531 is about 3376.4672366247. The cubic root of 11400531 is about 225.0652057927.

Adding to 11400531 its reverse (13500411), we get a palindrome (24900942).

The spelling of 11400531 in words is "eleven million, four hundred thousand, five hundred thirty-one".