747331 has 4 divisors (see below), whose sum is σ = 804832. Its totient is φ = 689832.

The previous prime is 747323. The next prime is 747343. The reversal of 747331 is 133747.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133747 = 79 ⋅1693.

It is not a de Polignac number, because 747331 - 2³ = 747323 is a prime.

It is a super-2 number, since 2×747331² = 1117007247122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 747296 and 747305.

It is not an unprimeable number, because it can be changed into a prime (747361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28731 + ... + 28756.

It is an arithmetic number, because the mean of its divisors is an integer number (201208).

2⁷⁴⁷³³¹ is an apocalyptic number.

747331 is a deficient number, since it is larger than the sum of its proper divisors (57501).

747331 is a wasteful number, since it uses less digits than its factorization.

747331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57500.

The product of its digits is 1764, while the sum is 25.

The square root of 747331 is about 864.4830825412. The cubic root of 747331 is about 90.7481261012.

The spelling of 747331 in words is "seven hundred forty-seven thousand, three hundred thirty-one".