4731391 has 12 divisors (see below), whose sum is σ = 5541312. Its totient is φ = 4027968.

The previous prime is 4731383. The next prime is 4731403. The reversal of 4731391 is 1931374.

It is not a de Polignac number, because 4731391 - 2³ = 4731383 is a prime.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4731341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10711 + ... + 11143.

It is an arithmetic number, because the mean of its divisors is an integer number (461776).

Almost surely, 2^4731391 is an apocalyptic number.

4731391 is a deficient number, since it is larger than the sum of its proper divisors (809921).

4731391 is a wasteful number, since it uses less digits than its factorization.

4731391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670 (or 663 counting only the distinct ones).

The product of its digits is 2268, while the sum is 28.

The square root of 4731391 is about 2175.1760848262. The cubic root of 4731391 is about 167.8789637458.

The spelling of 4731391 in words is "four million, seven hundred thirty-one thousand, three hundred ninety-one".