47403313 has 4 divisors (see below), whose sum is σ = 49037940. Its totient is φ = 45768688.

The previous prime is 47403281. The next prime is 47403319. The reversal of 47403313 is 31330474.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 27751824 + 19651489 = 5268^2 + 4433^2 .

It is a cyclic number.

It is not a de Polignac number, because 47403313 - 2⁵ = 47403281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47403319) 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, 817270 + ... + 817327.

It is an arithmetic number, because the mean of its divisors is an integer number (12259485).

Almost surely, 2^47403313 is an apocalyptic number.

It is an amenable number.

47403313 is a deficient number, since it is larger than the sum of its proper divisors (1634627).

47403313 is a wasteful number, since it uses less digits than its factorization.

47403313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1634626.

The product of its (nonzero) digits is 3024, while the sum is 25.

The square root of 47403313 is about 6885.0063907015. The cubic root of 47403313 is about 361.9119292685.

Adding to 47403313 its reverse (31330474), we get a palindrome (78733787).

The spelling of 47403313 in words is "forty-seven million, four hundred three thousand, three hundred thirteen".