11423134042231 has 4 divisors (see below), whose sum is σ = 11425165549552. Its totient is φ = 11421102534912.

The previous prime is 11423134042217. The next prime is 11423134042237. The reversal of 11423134042231 is 13224043132411.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11423134042231 - 2⁹ = 11423134041719 is a prime.

It is a super-2 number, since 2×11423134042231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11423134042193 and 11423134042202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11423134042237) 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, 1015745226 + ... + 1015756471.

It is an arithmetic number, because the mean of its divisors is an integer number (2856291387388).

Almost surely, 2^{11423134042231} is an apocalyptic number.

11423134042231 is a deficient number, since it is larger than the sum of its proper divisors (2031507321).

11423134042231 is an equidigital number, since it uses as much as digits as its factorization.

11423134042231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2031507320.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 11423134042231 its reverse (13224043132411), we get a palindrome (24647177174642).

The spelling of 11423134042231 in words is "eleven trillion, four hundred twenty-three billion, one hundred thirty-four million, forty-two thousand, two hundred thirty-one".