723135803 has 4 divisors (see below), whose sum is σ = 778761648. Its totient is φ = 667509960.

The previous prime is 723135799. The next prime is 723135811. The reversal of 723135803 is 308531327.

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

It is not a de Polignac number, because 723135803 - 2² = 723135799 is a prime.

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 723135803.

It is not an unprimeable number, because it can be changed into a prime (723135863) 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, 27812903 + ... + 27812928.

It is an arithmetic number, because the mean of its divisors is an integer number (194690412).

Almost surely, 2^723135803 is an apocalyptic number.

723135803 is a deficient number, since it is larger than the sum of its proper divisors (55625845).

723135803 is a wasteful number, since it uses less digits than its factorization.

723135803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55625844.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 723135803 is about 26891.1844848828. The cubic root of 723135803 is about 897.5802502710.

It can be divided in two parts, 7231 and 35803, that added together give a palindrome (43034).

The spelling of 723135803 in words is "seven hundred twenty-three million, one hundred thirty-five thousand, eight hundred three".