47131693 has 4 divisors (see below), whose sum is σ = 53864800. Its totient is φ = 40398588.

The previous prime is 47131691. The next prime is 47131697. The reversal of 47131693 is 39613174.

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 an emirpimes, since its reverse is a distinct semiprime: 39613174 = 2 ⋅19806587.

It is a cyclic number.

It is not a de Polignac number, because 47131693 - 2¹ = 47131691 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47131691) 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, 3366543 + ... + 3366556.

It is an arithmetic number, because the mean of its divisors is an integer number (13466200).

Almost surely, 2^47131693 is an apocalyptic number.

It is an amenable number.

47131693 is a deficient number, since it is larger than the sum of its proper divisors (6733107).

47131693 is an equidigital number, since it uses as much as digits as its factorization.

47131693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6733106.

The product of its digits is 13608, while the sum is 34.

The square root of 47131693 is about 6865.2525809325. The cubic root of 47131693 is about 361.2193554861.

The spelling of 47131693 in words is "forty-seven million, one hundred thirty-one thousand, six hundred ninety-three".