11383780531 has 2 divisors, whose sum is σ = 11383780532. Its totient is φ = 11383780530.

The previous prime is 11383780511. The next prime is 11383780543. The reversal of 11383780531 is 13508738311.

11383780531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11383780531 is a prime.

It is a super-2 number, since 2×11383780531² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11383780501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5691890265 + 5691890266.

It is an arithmetic number, because the mean of its divisors is an integer number (5691890266).

Almost surely, 2^11383780531 is an apocalyptic number.

11383780531 is a deficient number, since it is larger than the sum of its proper divisors (1).

11383780531 is an equidigital number, since it uses as much as digits as its factorization.

11383780531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 40.

The spelling of 11383780531 in words is "eleven billion, three hundred eighty-three million, seven hundred eighty thousand, five hundred thirty-one".