72412831 has 2 divisors, whose sum is σ = 72412832. Its totient is φ = 72412830.

The previous prime is 72412801. The next prime is 72412867. The reversal of 72412831 is 13821427.

It is a weak prime.

It is an emirp because it is prime and its reverse (13821427) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72412831 - 2⁵ = 72412799 is a prime.

It is a super-2 number, since 2×72412831² = 10487236186869122, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72412831.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72412801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36206415 + 36206416.

It is an arithmetic number, because the mean of its divisors is an integer number (36206416).

Almost surely, 2^72412831 is an apocalyptic number.

72412831 is a deficient number, since it is larger than the sum of its proper divisors (1).

72412831 is an equidigital number, since it uses as much as digits as its factorization.

72412831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2688, while the sum is 28.

The square root of 72412831 is about 8509.5729035011. The cubic root of 72412831 is about 416.8103637348.

The spelling of 72412831 in words is "seventy-two million, four hundred twelve thousand, eight hundred thirty-one".