72030231 has 48 divisors (see below), whose sum is σ = 131569984. Its totient is φ = 36951552.

The previous prime is 72030221. The next prime is 72030247. The reversal of 72030231 is 13203027.

It is not a de Polignac number, because 72030231 - 2⁵ = 72030199 is a prime.

It is a super-2 number, since 2×72030231² = 10376708355826722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72030221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 29115 + ... + 31491.

Almost surely, 2^72030231 is an apocalyptic number.

72030231 is a deficient number, since it is larger than the sum of its proper divisors (59539753).

72030231 is a wasteful number, since it uses less digits than its factorization.

72030231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2440 (or 2437 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 18.

The square root of 72030231 is about 8487.0625660472. The cubic root of 72030231 is about 416.0749814762.

Adding to 72030231 its reverse (13203027), we get a palindrome (85233258).

The spelling of 72030231 in words is "seventy-two million, thirty thousand, two hundred thirty-one".