47931118 has 4 divisors (see below), whose sum is σ = 71896680. Its totient is φ = 23965558.

The previous prime is 47931101. The next prime is 47931127. The reversal of 47931118 is 81113974.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81113974 = 2 ⋅40556987.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11982778 + ... + 11982781.

It is an arithmetic number, because the mean of its divisors is an integer number (17974170).

Almost surely, 2^47931118 is an apocalyptic number.

47931118 is a deficient number, since it is larger than the sum of its proper divisors (23965562).

47931118 is a wasteful number, since it uses less digits than its factorization.

47931118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23965561.

The product of its digits is 6048, while the sum is 34.

The square root of 47931118 is about 6923.2303153947. The cubic root of 47931118 is about 363.2501924252.

The spelling of 47931118 in words is "forty-seven million, nine hundred thirty-one thousand, one hundred eighteen".