64113831 has 12 divisors (see below), whose sum is σ = 92710800. Its totient is φ = 42695520.

The previous prime is 64113821. The next prime is 64113839. The reversal of 64113831 is 13831146.

64113831 is a `hidden beast` number, since 641 + 13 + 8 + 3 + 1 = 666.

It is not a de Polignac number, because 64113831 - 2⁷ = 64113703 is a prime.

It is a super-2 number, since 2×64113831² = 8221166650993122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 64113795 and 64113804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64113839) 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, 6046 + ... + 12836.

It is an arithmetic number, because the mean of its divisors is an integer number (7725900).

Almost surely, 2^64113831 is an apocalyptic number.

64113831 is a deficient number, since it is larger than the sum of its proper divisors (28596969).

64113831 is a wasteful number, since it uses less digits than its factorization.

64113831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7846 (or 7843 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 64113831 is about 8007.1112768588. Note that the first 3 decimals coincide. The cubic root of 64113831 is about 400.2370074576.

Adding to 64113831 its reverse (13831146), we get a palindrome (77944977).

The spelling of 64113831 in words is "sixty-four million, one hundred thirteen thousand, eight hundred thirty-one".