64001031 has 4 divisors (see below), whose sum is σ = 85334712. Its totient is φ = 42667352.

The previous prime is 64001023. The next prime is 64001059. The reversal of 64001031 is 13010046.

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 64001031 - 2³ = 64001023 is a prime.

It is a super-2 number, since 2×64001031² = 8192263938125922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 64001031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64001011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10666836 + ... + 10666841.

It is an arithmetic number, because the mean of its divisors is an integer number (21333678).

Almost surely, 2^64001031 is an apocalyptic number.

64001031 is a deficient number, since it is larger than the sum of its proper divisors (21333681).

64001031 is a wasteful number, since it uses less digits than its factorization.

64001031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21333680.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 64001031 is about 8000.0644372405. The cubic root of 64001031 is about 400.0021479051.

Adding to 64001031 its reverse (13010046), we get a palindrome (77011077).

The spelling of 64001031 in words is "sixty-four million, one thousand, thirty-one".