64304131 has 4 divisors (see below), whose sum is σ = 65672352. Its totient is φ = 62935912.

The previous prime is 64304129. The next prime is 64304147. The reversal of 64304131 is 13140346.

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 64304131 - 2¹ = 64304129 is a prime.

It is a super-2 number, since 2×64304131² = 8270042527330322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64304731) 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, 684040 + ... + 684133.

It is an arithmetic number, because the mean of its divisors is an integer number (16418088).

Almost surely, 2^64304131 is an apocalyptic number.

64304131 is a deficient number, since it is larger than the sum of its proper divisors (1368221).

64304131 is a wasteful number, since it uses less digits than its factorization.

64304131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1368220.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 64304131 is about 8018.9856590469. The cubic root of 64304131 is about 400.6326052491.

Adding to 64304131 its reverse (13140346), we get a palindrome (77444477).

The spelling of 64304131 in words is "sixty-four million, three hundred four thousand, one hundred thirty-one".