11212324431 has 32 divisors (see below), whose sum is σ = 18647193600. Its totient is φ = 5821920480.

The previous prime is 11212324429. The next prime is 11212324447. The reversal of 11212324431 is 13442321211.

It is not a de Polignac number, because 11212324431 - 2¹ = 11212324429 is a prime.

It is a super-2 number, since 2×11212324431² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11212324421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 558160 + ... + 577898.

It is an arithmetic number, because the mean of its divisors is an integer number (582724800).

Almost surely, 2^11212324431 is an apocalyptic number.

11212324431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11212324431 is a deficient number, since it is larger than the sum of its proper divisors (7434869169).

11212324431 is a wasteful number, since it uses less digits than its factorization.

11212324431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22219.

The product of its digits is 1152, while the sum is 24.

Adding to 11212324431 its reverse (13442321211), we get a palindrome (24654645642).

The spelling of 11212324431 in words is "eleven billion, two hundred twelve million, three hundred twenty-four thousand, four hundred thirty-one".