723319340 has 24 divisors (see below), whose sum is σ = 1554297360. Its totient is φ = 282598848.

The previous prime is 723319321. The next prime is 723319351. The reversal of 723319340 is 43913327.

It is a junction number, because it is equal to n+sod(n) for n = 723319297 and 723319306.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 419675 + ... + 421394.

It is an arithmetic number, because the mean of its divisors is an integer number (64762390).

Almost surely, 2^723319340 is an apocalyptic number.

It is an amenable number.

723319340 is an abundant number, since it is smaller than the sum of its proper divisors (830978020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

723319340 is a wasteful number, since it uses less digits than its factorization.

723319340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 841121 (or 841119 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 32.

The square root of 723319340 is about 26894.5968551306. The cubic root of 723319340 is about 897.6561812604.

The spelling of 723319340 in words is "seven hundred twenty-three million, three hundred nineteen thousand, three hundred forty".