1111427971 has 4 divisors (see below), whose sum is σ = 1169924200. Its totient is φ = 1052931744.

The previous prime is 1111427969. The next prime is 1111428001. The reversal of 1111427971 is 1797241111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1111427971 - 2¹ = 1111427969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1111427951) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29248086 + ... + 29248123.

It is an arithmetic number, because the mean of its divisors is an integer number (292481050).

Almost surely, 2^1111427971 is an apocalyptic number.

1111427971 is a deficient number, since it is larger than the sum of its proper divisors (58496229).

1111427971 is an equidigital number, since it uses as much as digits as its factorization.

1111427971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58496228.

The product of its digits is 3528, while the sum is 34.

The square root of 1111427971 is about 33338.0858928643. The cubic root of 1111427971 is about 1035.8426150284.

The spelling of 1111427971 in words is "one billion, one hundred eleven million, four hundred twenty-seven thousand, nine hundred seventy-one".