81406301 has 4 divisors (see below), whose sum is σ = 81832704. Its totient is φ = 80979900.

The previous prime is 81406291. The next prime is 81406307. The reversal of 81406301 is 10360418.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 81406301 - 2¹⁸ = 81144157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81406307) 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, 212915 + ... + 213296.

It is an arithmetic number, because the mean of its divisors is an integer number (20458176).

Almost surely, 2^81406301 is an apocalyptic number.

It is an amenable number.

81406301 is a deficient number, since it is larger than the sum of its proper divisors (426403).

81406301 is a wasteful number, since it uses less digits than its factorization.

81406301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426402.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 81406301 is about 9022.5440425636. The cubic root of 81406301 is about 433.3971061303.

Adding to 81406301 its reverse (10360418), we get a palindrome (91766719).

It can be divided in two parts, 8140 and 6301, that added together give a palindrome (14441).

The spelling of 81406301 in words is "eighty-one million, four hundred six thousand, three hundred one".