64130231 has 16 divisors (see below), whose sum is σ = 71981568. Its totient is φ = 56635200.

The previous prime is 64130207. The next prime is 64130237. The reversal of 64130231 is 13203146.

It is a cyclic number.

It is not a de Polignac number, because 64130231 - 2¹⁸ = 63868087 is a prime.

It is a super-2 number, since 2×64130231² = 8225373056226722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64130237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83891 + ... + 84651.

It is an arithmetic number, because the mean of its divisors is an integer number (4498848).

Almost surely, 2^64130231 is an apocalyptic number.

64130231 is a deficient number, since it is larger than the sum of its proper divisors (7851337).

64130231 is a wasteful number, since it uses less digits than its factorization.

64130231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 982.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 64130231 is about 8008.1353010548. The cubic root of 64130231 is about 400.2711307621.

Adding to 64130231 its reverse (13203146), we get a palindrome (77333377).

The spelling of 64130231 in words is "sixty-four million, one hundred thirty thousand, two hundred thirty-one".