11331142541 has 4 divisors (see below), whose sum is σ = 11331492732. Its totient is φ = 11330792352.

The previous prime is 11331142523. The next prime is 11331142573. The reversal of 11331142541 is 14524113311.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7853681641 + 3477460900 = 88621^2 + 58970^2 .

It is a cyclic number.

It is not a de Polignac number, because 11331142541 - 2⁶ = 11331142477 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11331142541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11331142741) 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, 120986 + ... + 193131.

It is an arithmetic number, because the mean of its divisors is an integer number (2832873183).

Almost surely, 2^11331142541 is an apocalyptic number.

It is an amenable number.

11331142541 is a deficient number, since it is larger than the sum of its proper divisors (350191).

11331142541 is an equidigital number, since it uses as much as digits as its factorization.

11331142541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350190.

The product of its digits is 1440, while the sum is 26.

Adding to 11331142541 its reverse (14524113311), we get a palindrome (25855255852).

The spelling of 11331142541 in words is "eleven billion, three hundred thirty-one million, one hundred forty-two thousand, five hundred forty-one".