747431 has 4 divisors (see below), whose sum is σ = 779952. Its totient is φ = 714912.

The previous prime is 747427. The next prime is 747449. The reversal of 747431 is 134747.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134747 = 127 ⋅1061.

It is a cyclic number.

It is not a de Polignac number, because 747431 - 2² = 747427 is a prime.

It is a super-2 number, since 2×747431² = 1117306199522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 747431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (747401) 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 3 ways as a sum of consecutive naturals, for example, 16226 + ... + 16271.

It is an arithmetic number, because the mean of its divisors is an integer number (194988).

2⁷⁴⁷⁴³¹ is an apocalyptic number.

747431 is a deficient number, since it is larger than the sum of its proper divisors (32521).

747431 is a wasteful number, since it uses less digits than its factorization.

747431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32520.

The product of its digits is 2352, while the sum is 26.

The square root of 747431 is about 864.5409186383. The cubic root of 747431 is about 90.7521735750.

The spelling of 747431 in words is "seven hundred forty-seven thousand, four hundred thirty-one".