11142544331 has 4 divisors (see below), whose sum is σ = 11241151032. Its totient is φ = 11043937632.

The previous prime is 11142544307. The next prime is 11142544349. The reversal of 11142544331 is 13344524111.

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 11142544331 - 2⁶ = 11142544267 is a prime.

It is a super-2 number, since 2×11142544331² (a number of 21 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 = 11142544294 and 11142544303.

It is not an unprimeable number, because it can be changed into a prime (11142544531) 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, 49303181 + ... + 49303406.

It is an arithmetic number, because the mean of its divisors is an integer number (2810287758).

Almost surely, 2^11142544331 is an apocalyptic number.

11142544331 is a deficient number, since it is larger than the sum of its proper divisors (98606701).

11142544331 is an equidigital number, since it uses as much as digits as its factorization.

11142544331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98606700.

The product of its digits is 5760, while the sum is 29.

The spelling of 11142544331 in words is "eleven billion, one hundred forty-two million, five hundred forty-four thousand, three hundred thirty-one".