64228711431 has 4 divisors (see below), whose sum is σ = 85638281912. Its totient is φ = 42819140952.

The previous prime is 64228711423. The next prime is 64228711441. The reversal of 64228711431 is 13411782246.

64228711431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 64228711431 - 2³ = 64228711423 is a prime.

It is a super-2 number, since 2×64228711431² (a number of 22 digits) contains 22 as substring.

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 64228711431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64228711441) 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, 10704785236 + ... + 10704785241.

It is an arithmetic number, because the mean of its divisors is an integer number (21409570478).

Almost surely, 2^64228711431 is an apocalyptic number.

64228711431 is a deficient number, since it is larger than the sum of its proper divisors (21409570481).

64228711431 is a wasteful number, since it uses less digits than its factorization.

64228711431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21409570480.

The product of its digits is 64512, while the sum is 39.

The spelling of 64228711431 in words is "sixty-four billion, two hundred twenty-eight million, seven hundred eleven thousand, four hundred thirty-one".