111872473 has 2 divisors, whose sum is σ = 111872474. Its totient is φ = 111872472.

The previous prime is 111872471. The next prime is 111872491. The reversal of 111872473 is 374278111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99141849 + 12730624 = 9957^2 + 3568^2 .

It is an emirp because it is prime and its reverse (374278111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111872473 - 2¹ = 111872471 is a prime.

Together with 111872471, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (111872471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55936236 + 55936237.

It is an arithmetic number, because the mean of its divisors is an integer number (55936237).

Almost surely, 2^111872473 is an apocalyptic number.

It is an amenable number.

111872473 is a deficient number, since it is larger than the sum of its proper divisors (1).

111872473 is an equidigital number, since it uses as much as digits as its factorization.

111872473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9408, while the sum is 34.

The square root of 111872473 is about 10576.9784437712. The cubic root of 111872473 is about 481.8454320359.

The spelling of 111872473 in words is "one hundred eleven million, eight hundred seventy-two thousand, four hundred seventy-three".