80680531 has 4 divisors (see below), whose sum is σ = 81394632. Its totient is φ = 79966432.

The previous prime is 80680519. The next prime is 80680543. The reversal of 80680531 is 13508608.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (80680519) and next prime (80680543).

It is a cyclic number.

It is not a de Polignac number, because 80680531 - 2⁵ = 80680499 is a prime.

It is a super-2 number, since 2×80680531² = 13018696164883922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 80680493 and 80680502.

It is not an unprimeable number, because it can be changed into a prime (80680571) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 356881 + ... + 357106.

It is an arithmetic number, because the mean of its divisors is an integer number (20348658).

Almost surely, 2^80680531 is an apocalyptic number.

80680531 is a deficient number, since it is larger than the sum of its proper divisors (714101).

80680531 is a wasteful number, since it uses less digits than its factorization.

80680531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714100.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 80680531 is about 8982.2341875504. The cubic root of 80680531 is about 432.1052894796.

The spelling of 80680531 in words is "eighty million, six hundred eighty thousand, five hundred thirty-one".