11927471331 has 16 divisors (see below), whose sum is σ = 16755494400. Its totient is φ = 7526307168.

The previous prime is 11927471291. The next prime is 11927471351. The reversal of 11927471331 is 13317472911.

It is not a de Polignac number, because 11927471331 - 2²³ = 11919082723 is a prime.

It is a super-2 number, since 2×11927471331² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11927471331.

It is not an unprimeable number, because it can be changed into a prime (11927471351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31131 + ... + 157556.

It is an arithmetic number, because the mean of its divisors is an integer number (1047218400).

Almost surely, 2^11927471331 is an apocalyptic number.

11927471331 is a deficient number, since it is larger than the sum of its proper divisors (4828023069).

11927471331 is a wasteful number, since it uses less digits than its factorization.

11927471331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189818.

The product of its digits is 31752, while the sum is 39.

The spelling of 11927471331 in words is "eleven billion, nine hundred twenty-seven million, four hundred seventy-one thousand, three hundred thirty-one".