80403381 has 8 divisors (see below), whose sum is σ = 119116160. Its totient is φ = 53602236.

The previous prime is 80403361. The next prime is 80403391. The reversal of 80403381 is 18330408.

It is not a de Polignac number, because 80403381 - 2⁶ = 80403317 is a prime.

It is a super-2 number, since 2×80403381² = 12929407352462322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 2977903 = 80403381 / (8 + 0 + 4 + 0 + 3 + 3 + 8 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80403361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1488925 + ... + 1488978.

It is an arithmetic number, because the mean of its divisors is an integer number (14889520).

Almost surely, 2^80403381 is an apocalyptic number.

It is an amenable number.

80403381 is a deficient number, since it is larger than the sum of its proper divisors (38712779).

80403381 is a wasteful number, since it uses less digits than its factorization.

80403381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2977912 (or 2977906 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 80403381 is about 8966.7932395032. The cubic root of 80403381 is about 431.6099391937.

Adding to 80403381 its reverse (18330408), we get a palindrome (98733789).

The spelling of 80403381 in words is "eighty million, four hundred three thousand, three hundred eighty-one".