64334131 has 4 divisors (see below), whose sum is σ = 65424600. Its totient is φ = 63243664.

The previous prime is 64334129. The next prime is 64334143. The reversal of 64334131 is 13143346.

It is a happy number.

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 64334131 - 2¹ = 64334129 is a prime.

It is a super-2 number, since 2×64334131² = 8277760823050322, 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 = 64334096 and 64334105.

It is not an unprimeable number, because it can be changed into a prime (64334191) 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, 545146 + ... + 545263.

It is an arithmetic number, because the mean of its divisors is an integer number (16356150).

Almost surely, 2^64334131 is an apocalyptic number.

64334131 is a deficient number, since it is larger than the sum of its proper divisors (1090469).

64334131 is a wasteful number, since it uses less digits than its factorization.

64334131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1090468.

The product of its digits is 2592, while the sum is 25.

The square root of 64334131 is about 8020.8560016996. The cubic root of 64334131 is about 400.6948983417.

Adding to 64334131 its reverse (13143346), we get a palindrome (77477477).

The spelling of 64334131 in words is "sixty-four million, three hundred thirty-four thousand, one hundred thirty-one".