47418731 has 4 divisors (see below), whose sum is σ = 47439000. Its totient is φ = 47398464.

The previous prime is 47418697. The next prime is 47418733. The reversal of 47418731 is 13781474.

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 47418731 - 2¹⁴ = 47402347 is a prime.

It is a super-2 number, since 2×47418731² = 4497072099300722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 47418691 and 47418700.

It is not an unprimeable number, because it can be changed into a prime (47418733) 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, 6086 + ... + 11483.

It is an arithmetic number, because the mean of its divisors is an integer number (11859750).

Almost surely, 2^47418731 is an apocalyptic number.

47418731 is a deficient number, since it is larger than the sum of its proper divisors (20269).

47418731 is a wasteful number, since it uses less digits than its factorization.

47418731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20268.

The product of its digits is 18816, while the sum is 35.

The square root of 47418731 is about 6886.1259790974. The cubic root of 47418731 is about 361.9511624846.

The spelling of 47418731 in words is "forty-seven million, four hundred eighteen thousand, seven hundred thirty-one".