11742122531 has 32 divisors (see below), whose sum is σ = 13041600000. Its totient is φ = 10529326080.

The previous prime is 11742122519. The next prime is 11742122543. The reversal of 11742122531 is 13522124711.

11742122531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11742122519) and next prime (11742122543).

It is a cyclic number.

It is not a de Polignac number, because 11742122531 - 2¹⁰ = 11742121507 is a prime.

It is a super-2 number, since 2×11742122531² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11742122494 and 11742122503.

It is not an unprimeable number, because it can be changed into a prime (11742122731) 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 in 31 ways as a sum of consecutive naturals, for example, 9400595 + ... + 9401843.

It is an arithmetic number, because the mean of its divisors is an integer number (407550000).

Almost surely, 2^11742122531 is an apocalyptic number.

11742122531 is a deficient number, since it is larger than the sum of its proper divisors (1299477469).

11742122531 is a wasteful number, since it uses less digits than its factorization.

11742122531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1659.

The product of its digits is 3360, while the sum is 29.

The spelling of 11742122531 in words is "eleven billion, seven hundred forty-two million, one hundred twenty-two thousand, five hundred thirty-one".