47123011 has 4 divisors (see below), whose sum is σ = 50747872. Its totient is φ = 43498152.

The previous prime is 47123009. The next prime is 47123017. The reversal of 47123011 is 11032174.

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 47123011 - 2¹ = 47123009 is a prime.

It is a super-2 number, since 2×47123011² = 4441156331412242, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 47123011.

It is not an unprimeable number, because it can be changed into a prime (47123017) 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, 1812411 + ... + 1812436.

It is an arithmetic number, because the mean of its divisors is an integer number (12686968).

Almost surely, 2^47123011 is an apocalyptic number.

47123011 is a deficient number, since it is larger than the sum of its proper divisors (3624861).

47123011 is a wasteful number, since it uses less digits than its factorization.

47123011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3624860.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 47123011 is about 6864.6202371289. The cubic root of 47123011 is about 361.1971743816.

Adding to 47123011 its reverse (11032174), we get a palindrome (58155185).

The spelling of 47123011 in words is "forty-seven million, one hundred twenty-three thousand, eleven".