723031641 has 24 divisors (see below), whose sum is σ = 1107366624. Its totient is φ = 453029760.

The previous prime is 723031619. The next prime is 723031717. The reversal of 723031641 is 146130327.

It is not a de Polignac number, because 723031641 - 2⁵ = 723031609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (723031601) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 121170 + ... + 126996.

It is an arithmetic number, because the mean of its divisors is an integer number (46140276).

Almost surely, 2^723031641 is an apocalyptic number.

It is an amenable number.

723031641 is a deficient number, since it is larger than the sum of its proper divisors (384334983).

723031641 is a wasteful number, since it uses less digits than its factorization.

723031641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6661 (or 6658 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 723031641 is about 26889.2476837862. The cubic root of 723031641 is about 897.5371517534.

Adding to 723031641 its reverse (146130327), we get a palindrome (869161968).

The spelling of 723031641 in words is "seven hundred twenty-three million, thirty-one thousand, six hundred forty-one".