291227116 has 6 divisors (see below), whose sum is σ = 509647460. Its totient is φ = 145613556.

The previous prime is 291227107. The next prime is 291227159. The reversal of 291227116 is 611722192.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36403386 + ... + 36403393.

Almost surely, 2^291227116 is an apocalyptic number.

It is an amenable number.

291227116 is a deficient number, since it is larger than the sum of its proper divisors (218420344).

291227116 is a wasteful number, since it uses less digits than its factorization.

291227116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72806783 (or 72806781 counting only the distinct ones).

The product of its digits is 3024, while the sum is 31.

The square root of 291227116 is about 17065.3776987209. The cubic root of 291227116 is about 662.8428914909.

The spelling of 291227116 in words is "two hundred ninety-one million, two hundred twenty-seven thousand, one hundred sixteen".