11001423431 has 8 divisors (see below), whose sum is σ = 11216635920. Its totient is φ = 10786493952.

The previous prime is 11001423421. The next prime is 11001423449. The reversal of 11001423431 is 13432410011.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11001423431 is a prime.

It is a super-2 number, since 2×11001423431² (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 (11001423421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8615 + ... + 148583.

It is an arithmetic number, because the mean of its divisors is an integer number (1402079490).

Almost surely, 2^11001423431 is an apocalyptic number.

11001423431 is a deficient number, since it is larger than the sum of its proper divisors (215212489).

11001423431 is a wasteful number, since it uses less digits than its factorization.

11001423431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141505.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 11001423431 its reverse (13432410011), we get a palindrome (24433833442).

The spelling of 11001423431 in words is "eleven billion, one million, four hundred twenty-three thousand, four hundred thirty-one".