111347656731 has 6 divisors (see below), whose sum is σ = 160835504180. Its totient is φ = 74231771148.

The previous prime is 111347656729. The next prime is 111347656757. The reversal of 111347656731 is 137656743111.

111347656731 is a `hidden beast` number, since 1 + 1 + 13 + 4 + 76 + 567 + 3 + 1 = 666.

It is not a de Polignac number, because 111347656731 - 2¹ = 111347656729 is a prime.

It is a super-2 number, since 2×111347656731² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111347656631) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6185980921 + ... + 6185980938.

Almost surely, 2^111347656731 is an apocalyptic number.

111347656731 is a deficient number, since it is larger than the sum of its proper divisors (49487847449).

111347656731 is a wasteful number, since it uses less digits than its factorization.

111347656731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12371961865 (or 12371961862 counting only the distinct ones).

The product of its digits is 317520, while the sum is 45.

The spelling of 111347656731 in words is "one hundred eleven billion, three hundred forty-seven million, six hundred fifty-six thousand, seven hundred thirty-one".