11427731073 has 24 divisors (see below), whose sum is σ = 18472038240. Its totient is φ = 6924781080.

The previous prime is 11427730991. The next prime is 11427731083. The reversal of 11427731073 is 37013772411.

It is a happy number.

11427731073 is a `hidden beast` number, since 1 + 1 + 4 + 277 + 310 + 73 = 666.

It is not a de Polignac number, because 11427731073 - 2¹⁶ = 11427665537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11427731083) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1839190 + ... + 1845392.

It is an arithmetic number, because the mean of its divisors is an integer number (769668260).

Almost surely, 2^11427731073 is an apocalyptic number.

It is an amenable number.

11427731073 is a deficient number, since it is larger than the sum of its proper divisors (7044307167).

11427731073 is an frugal number, since it uses more digits than its factorization.

11427731073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12426 (or 6217 counting only the distinct ones).

The product of its (nonzero) digits is 24696, while the sum is 36.

The spelling of 11427731073 in words is "eleven billion, four hundred twenty-seven million, seven hundred thirty-one thousand, seventy-three".