72023831 has 8 divisors (see below), whose sum is σ = 79519104. Its totient is φ = 64686520.

The previous prime is 72023801. The next prime is 72023843. The reversal of 72023831 is 13832027.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72023831 - 2¹⁸ = 71761687 is a prime.

It is a super-2 number, since 2×72023831² = 10374864463833122, which contains 22 as substring.

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 72023831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72023801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38531 + ... + 40356.

It is an arithmetic number, because the mean of its divisors is an integer number (9939888).

Almost surely, 2^72023831 is an apocalyptic number.

72023831 is a deficient number, since it is larger than the sum of its proper divisors (7495273).

72023831 is a wasteful number, since it uses less digits than its factorization.

72023831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78981.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 72023831 is about 8486.6855132024. The cubic root of 72023831 is about 416.0626581377.

Adding to 72023831 its reverse (13832027), we get a palindrome (85855858).

The spelling of 72023831 in words is "seventy-two million, twenty-three thousand, eight hundred thirty-one".