11261770731 has 12 divisors (see below), whose sum is σ = 16344099720. Its totient is φ = 7472263680.

The previous prime is 11261770703. The next prime is 11261770813. The reversal of 11261770731 is 13707716211.

11261770731 is a `hidden beast` number, since 1 + 1 + 2 + 617 + 7 + 0 + 7 + 31 = 666.

It is not a de Polignac number, because 11261770731 - 2⁷ = 11261770603 is a prime.

It is a super-2 number, since 2×11261770731² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11261770831) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2963286 + ... + 2967083.

It is an arithmetic number, because the mean of its divisors is an integer number (1362008310).

Almost surely, 2^11261770731 is an apocalyptic number.

11261770731 is a deficient number, since it is larger than the sum of its proper divisors (5082328989).

11261770731 is a wasteful number, since it uses less digits than its factorization.

11261770731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5930586 (or 5930583 counting only the distinct ones).

The product of its (nonzero) digits is 12348, while the sum is 36.

The spelling of 11261770731 in words is "eleven billion, two hundred sixty-one million, seven hundred seventy thousand, seven hundred thirty-one".