743623431 has 4 divisors (see below), whose sum is σ = 991497912. Its totient is φ = 495748952.

The previous prime is 743623427. The next prime is 743623453. The reversal of 743623431 is 134326347.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 743623431 - 2² = 743623427 is a prime.

It is a super-2 number, since 2×743623431² = 1105951614264423522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 743623392 and 743623401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (743623471) 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, 123937236 + ... + 123937241.

It is an arithmetic number, because the mean of its divisors is an integer number (247874478).

Almost surely, 2^743623431 is an apocalyptic number.

743623431 is a deficient number, since it is larger than the sum of its proper divisors (247874481).

743623431 is a wasteful number, since it uses less digits than its factorization.

743623431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247874480.

The product of its digits is 36288, while the sum is 33.

The square root of 743623431 is about 27269.4596756151. The cubic root of 743623431 is about 905.9780766981.

Adding to 743623431 its reverse (134326347), we get a palindrome (877949778).

The spelling of 743623431 in words is "seven hundred forty-three million, six hundred twenty-three thousand, four hundred thirty-one".