11131430771 has 4 divisors (see below), whose sum is σ = 11133324312. Its totient is φ = 11129537232.

The previous prime is 11131430711. The next prime is 11131430813. The reversal of 11131430771 is 17703413111.

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 11131430771 - 2¹⁸ = 11131168627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11131430701) 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, 937925 + ... + 949718.

It is an arithmetic number, because the mean of its divisors is an integer number (2783331078).

Almost surely, 2^11131430771 is an apocalyptic number.

11131430771 is a deficient number, since it is larger than the sum of its proper divisors (1893541).

11131430771 is an equidigital number, since it uses as much as digits as its factorization.

11131430771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1893540.

The product of its (nonzero) digits is 1764, while the sum is 29.

Adding to 11131430771 its reverse (17703413111), we get a palindrome (28834843882).

The spelling of 11131430771 in words is "eleven billion, one hundred thirty-one million, four hundred thirty thousand, seven hundred seventy-one".