743318431 has 4 divisors (see below), whose sum is σ = 743529472. Its totient is φ = 743107392.

The previous prime is 743318377. The next prime is 743318447. The reversal of 743318431 is 134813347.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134813347 = 797 ⋅169151.

It is a cyclic number.

It is not a de Polignac number, because 743318431 - 2¹¹ = 743316383 is a prime.

It is a super-2 number, since 2×743318431² = 1105044579728603522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (743318491) 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, 100146 + ... + 107311.

It is an arithmetic number, because the mean of its divisors is an integer number (185882368).

Almost surely, 2^743318431 is an apocalyptic number.

743318431 is a deficient number, since it is larger than the sum of its proper divisors (211041).

743318431 is a wasteful number, since it uses less digits than its factorization.

743318431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211040.

The product of its digits is 24192, while the sum is 34.

The square root of 743318431 is about 27263.8667653728. The cubic root of 743318431 is about 905.8541962998.

The spelling of 743318431 in words is "seven hundred forty-three million, three hundred eighteen thousand, four hundred thirty-one".