64234236631 has 8 divisors (see below), whose sum is σ = 67031693280. Its totient is φ = 61437168672.

The previous prime is 64234236601. The next prime is 64234236697. The reversal of 64234236631 is 13663243246.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64234236631 - 2²¹ = 64232139479 is a prime.

It is a super-2 number, since 2×64234236631² (a number of 22 digits) 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 (64234236601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 270121 + ... + 448813.

It is an arithmetic number, because the mean of its divisors is an integer number (8378961660).

Almost surely, 2^64234236631 is an apocalyptic number.

64234236631 is a deficient number, since it is larger than the sum of its proper divisors (2797456649).

64234236631 is a wasteful number, since it uses less digits than its factorization.

64234236631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194345.

The product of its digits is 373248, while the sum is 40.

Adding to 64234236631 its reverse (13663243246), we get a palindrome (77897479877).

The spelling of 64234236631 in words is "sixty-four billion, two hundred thirty-four million, two hundred thirty-six thousand, six hundred thirty-one".