723465431 has 4 divisors (see below), whose sum is σ = 779116632. Its totient is φ = 667814232.

The previous prime is 723465427. The next prime is 723465439. The reversal of 723465431 is 134564327.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134564327 = 19 ⋅7082333.

It is a cyclic number.

It is not a de Polignac number, because 723465431 - 2² = 723465427 is a prime.

It is a super-2 number, since 2×723465431² = 1046804459704031522, 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 = 723465391 and 723465400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (723465439) 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, 27825581 + ... + 27825606.

It is an arithmetic number, because the mean of its divisors is an integer number (194779158).

Almost surely, 2^723465431 is an apocalyptic number.

723465431 is a deficient number, since it is larger than the sum of its proper divisors (55651201).

723465431 is a wasteful number, since it uses less digits than its factorization.

723465431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55651200.

The product of its digits is 60480, while the sum is 35.

The square root of 723465431 is about 26897.3127096370. The cubic root of 723465431 is about 897.7166113056.

It can be divided in two parts, 72346 and 5431, that added together give a palindrome (77777).

The spelling of 723465431 in words is "seven hundred twenty-three million, four hundred sixty-five thousand, four hundred thirty-one".