1113920971 has 4 divisors (see below), whose sum is σ = 1179445752. Its totient is φ = 1048396192.

The previous prime is 1113920959. The next prime is 1113920987. The reversal of 1113920971 is 1790293111.

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 1113920971 - 2⁹ = 1113920459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1113920911) 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, 32762365 + ... + 32762398.

It is an arithmetic number, because the mean of its divisors is an integer number (294861438).

Almost surely, 2^1113920971 is an apocalyptic number.

1113920971 is a deficient number, since it is larger than the sum of its proper divisors (65524781).

1113920971 is an equidigital number, since it uses as much as digits as its factorization.

1113920971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65524780.

The product of its (nonzero) digits is 3402, while the sum is 34.

The square root of 1113920971 is about 33375.4546186265. The cubic root of 1113920971 is about 1036.6165225048.

The spelling of 1113920971 in words is "one billion, one hundred thirteen million, nine hundred twenty thousand, nine hundred seventy-one".