47381023 has 4 divisors (see below), whose sum is σ = 50168160. Its totient is φ = 44593888.

The previous prime is 47381017. The next prime is 47381083. The reversal of 47381023 is 32018374.

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 47381023 - 2⁹ = 47380511 is a prime.

It is a super-2 number, since 2×47381023² = 4489922681053058, 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 = 47380982 and 47381000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47381083) 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, 1393543 + ... + 1393576.

It is an arithmetic number, because the mean of its divisors is an integer number (12542040).

Almost surely, 2^47381023 is an apocalyptic number.

47381023 is a deficient number, since it is larger than the sum of its proper divisors (2787137).

47381023 is a wasteful number, since it uses less digits than its factorization.

47381023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2787136.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 47381023 is about 6883.3874654853. The cubic root of 47381023 is about 361.8551942631.

Adding to 47381023 its reverse (32018374), we get a palindrome (79399397).

The spelling of 47381023 in words is "forty-seven million, three hundred eighty-one thousand, twenty-three".