47312437 has 4 divisors (see below), whose sum is σ = 47326240. Its totient is φ = 47298636.

The previous prime is 47312423. The next prime is 47312459. The reversal of 47312437 is 73421374.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47312437 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 47312399 and 47312408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47312467) 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, 2614 + ... + 10072.

It is an arithmetic number, because the mean of its divisors is an integer number (11831560).

Almost surely, 2^47312437 is an apocalyptic number.

It is an amenable number.

47312437 is a deficient number, since it is larger than the sum of its proper divisors (13803).

47312437 is an equidigital number, since it uses as much as digits as its factorization.

47312437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13802.

The product of its digits is 14112, while the sum is 31.

The square root of 47312437 is about 6878.4036665494. The cubic root of 47312437 is about 361.6805098040.

The spelling of 47312437 in words is "forty-seven million, three hundred twelve thousand, four hundred thirty-seven".