47311393 has 2 divisors, whose sum is σ = 47311394. Its totient is φ = 47311392.

The previous prime is 47311379. The next prime is 47311399. The reversal of 47311393 is 39311374.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46335249 + 976144 = 6807^2 + 988^2 .

It is a cyclic number.

It is not a de Polignac number, because 47311393 - 2⁵ = 47311361 is a prime.

It is not a weakly prime, because it can be changed into another prime (47311399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23655696 + 23655697.

It is an arithmetic number, because the mean of its divisors is an integer number (23655697).

Almost surely, 2^47311393 is an apocalyptic number.

It is an amenable number.

47311393 is a deficient number, since it is larger than the sum of its proper divisors (1).

47311393 is an equidigital number, since it uses as much as digits as its factorization.

47311393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6804, while the sum is 31.

The square root of 47311393 is about 6878.3277764294. The cubic root of 47311393 is about 361.6778494941.

The spelling of 47311393 in words is "forty-seven million, three hundred eleven thousand, three hundred ninety-three".