80681233 has 2 divisors, whose sum is σ = 80681234. Its totient is φ = 80681232.

The previous prime is 80681213. The next prime is 80681243. The reversal of 80681233 is 33218608.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69605649 + 11075584 = 8343^2 + 3328^2 .

It is a cyclic number.

It is not a de Polignac number, because 80681233 - 2²⁵ = 47126801 is a prime.

It is a super-2 number, since 2×80681233² = 13018922716800578, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 80681195 and 80681204.

It is not a weakly prime, because it can be changed into another prime (80681203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40340616 + 40340617.

It is an arithmetic number, because the mean of its divisors is an integer number (40340617).

Almost surely, 2^80681233 is an apocalyptic number.

It is an amenable number.

80681233 is a deficient number, since it is larger than the sum of its proper divisors (1).

80681233 is an equidigital number, since it uses as much as digits as its factorization.

80681233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 80681233 is about 8982.2732646029. The cubic root of 80681233 is about 432.1065427230.

The spelling of 80681233 in words is "eighty million, six hundred eighty-one thousand, two hundred thirty-three".