80731237 has 2 divisors, whose sum is σ = 80731238. Its totient is φ = 80731236.

The previous prime is 80731229. The next prime is 80731241. The reversal of 80731237 is 73213708.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73256481 + 7474756 = 8559^2 + 2734^2 .

It is a cyclic number.

It is not a de Polignac number, because 80731237 - 2³ = 80731229 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 80731199 and 80731208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80731267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40365618 + 40365619.

It is an arithmetic number, because the mean of its divisors is an integer number (40365619).

Almost surely, 2^80731237 is an apocalyptic number.

It is an amenable number.

80731237 is a deficient number, since it is larger than the sum of its proper divisors (1).

80731237 is an equidigital number, since it uses as much as digits as its factorization.

80731237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 80731237 is about 8985.0563159059. The cubic root of 80731237 is about 432.1957935210.

The spelling of 80731237 in words is "eighty million, seven hundred thirty-one thousand, two hundred thirty-seven".