80111431 has 4 divisors (see below), whose sum is σ = 81307192. Its totient is φ = 78915672.

The previous prime is 80111413. The next prime is 80111491. The reversal of 80111431 is 13411108.

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

It is a cyclic number.

It is not a de Polignac number, because 80111431 - 2¹³ = 80103239 is a prime.

It is a super-2 number, since 2×80111431² = 12835682753735522, 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 = 80111399 and 80111408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80111491) 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, 597780 + ... + 597913.

It is an arithmetic number, because the mean of its divisors is an integer number (20326798).

Almost surely, 2^80111431 is an apocalyptic number.

80111431 is a deficient number, since it is larger than the sum of its proper divisors (1195761).

80111431 is a wasteful number, since it uses less digits than its factorization.

80111431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1195760.

The product of its (nonzero) digits is 96, while the sum is 19.

The square root of 80111431 is about 8950.4989246410. The cubic root of 80111431 is about 431.0869042016.

Adding to 80111431 its reverse (13411108), we get a palindrome (93522539).

The spelling of 80111431 in words is "eighty million, one hundred eleven thousand, four hundred thirty-one".