11545431 has 8 divisors (see below), whose sum is σ = 16299504. Its totient is φ = 7244160.

The previous prime is 11545421. The next prime is 11545433. The reversal of 11545431 is 13454511.

It is a happy number.

11545431 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11545431 - 2⁵ = 11545399 is a prime.

It is a super-2 number, since 2×11545431² = 266593953951522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11545433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113140 + ... + 113241.

It is an arithmetic number, because the mean of its divisors is an integer number (2037438).

Almost surely, 2^11545431 is an apocalyptic number.

11545431 is a deficient number, since it is larger than the sum of its proper divisors (4754073).

11545431 is a wasteful number, since it uses less digits than its factorization.

11545431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226401.

The product of its digits is 1200, while the sum is 24.

The square root of 11545431 is about 3397.8568245293. The cubic root of 11545431 is about 226.0147156732.

Adding to 11545431 its reverse (13454511), we get a palindrome (24999942).

The spelling of 11545431 in words is "eleven million, five hundred forty-five thousand, four hundred thirty-one".