722031 has 4 divisors (see below), whose sum is σ = 962712. Its totient is φ = 481352.

The previous prime is 722027. The next prime is 722047. The reversal of 722031 is 130227.

722031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 722031 - 2² = 722027 is a prime.

It is a super-2 number, since 2×722031² = 1042657529922, which contains 22 as substring.

It is an Ulam number.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 722031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722011) 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, 120336 + ... + 120341.

It is an arithmetic number, because the mean of its divisors is an integer number (240678).

2⁷²²⁰³¹ is an apocalyptic number.

722031 is a deficient number, since it is larger than the sum of its proper divisors (240681).

722031 is a wasteful number, since it uses less digits than its factorization.

722031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240680.

The product of its (nonzero) digits is 84, while the sum is 15.

The square root of 722031 is about 849.7240728613. The cubic root of 722031 is about 89.7122911188.

Adding to 722031 its reverse (130227), we get a palindrome (852258).

The spelling of 722031 in words is "seven hundred twenty-two thousand, thirty-one".