64335232031 has 12 divisors (see below), whose sum is σ = 74844619272. Its totient is φ = 55140302448.

The previous prime is 64335232019. The next prime is 64335232063. The reversal of 64335232031 is 13023253346.

It is not a de Polignac number, because 64335232031 - 2²⁶ = 64268123167 is a prime.

It is a super-2 number, since 2×64335232031² (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 (64335232231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 724541 + ... + 808473.

It is an arithmetic number, because the mean of its divisors is an integer number (6237051606).

Almost surely, 2^64335232031 is an apocalyptic number.

64335232031 is a deficient number, since it is larger than the sum of its proper divisors (10509387241).

64335232031 is a wasteful number, since it uses less digits than its factorization.

64335232031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99590 (or 99583 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 32.

Adding to 64335232031 its reverse (13023253346), we get a palindrome (77358485377).

The spelling of 64335232031 in words is "sixty-four billion, three hundred thirty-five million, two hundred thirty-two thousand, thirty-one".