11212431 has 8 divisors (see below), whose sum is σ = 15600000. Its totient is φ = 7149912.

The previous prime is 11212429. The next prime is 11212433. The reversal of 11212431 is 13421211.

It is an interprime number because it is at equal distance from previous prime (11212429) and next prime (11212433).

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

It is not a de Polignac number, because 11212431 - 2¹ = 11212429 is a prime.

It is a super-2 number, since 2×11212431² = 251437217859522, 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 11212431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11212433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81181 + ... + 81318.

It is an arithmetic number, because the mean of its divisors is an integer number (1950000).

Almost surely, 2^11212431 is an apocalyptic number.

11212431 is a deficient number, since it is larger than the sum of its proper divisors (4387569).

11212431 is a wasteful number, since it uses less digits than its factorization.

11212431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162525.

The product of its digits is 48, while the sum is 15.

The square root of 11212431 is about 3348.4968269359. The cubic root of 11212431 is about 223.8205341332.

Adding to 11212431 its reverse (13421211), we get a palindrome (24633642).

The spelling of 11212431 in words is "eleven million, two hundred twelve thousand, four hundred thirty-one".