81400301 has 8 divisors (see below), whose sum is σ = 86443200. Its totient is φ = 76385728.

The previous prime is 81400279. The next prime is 81400307. The reversal of 81400301 is 10300418.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-81400301 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 81400301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81400307) 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, 1001 + ... + 12798.

It is an arithmetic number, because the mean of its divisors is an integer number (10805400).

Almost surely, 2^81400301 is an apocalyptic number.

It is an amenable number.

81400301 is a deficient number, since it is larger than the sum of its proper divisors (5042899).

81400301 is a wasteful number, since it uses less digits than its factorization.

81400301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14163.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 81400301 is about 9022.2115359816. The cubic root of 81400301 is about 433.3864581154.

Adding to 81400301 its reverse (10300418), we get a palindrome (91700719).

The spelling of 81400301 in words is "eighty-one million, four hundred thousand, three hundred one".