64471031 has 16 divisors (see below), whose sum is σ = 68428800. Its totient is φ = 60654048.

The previous prime is 64471007. The next prime is 64471037. The reversal of 64471031 is 13017446.

It is a cyclic number.

It is not a de Polignac number, because 64471031 - 2¹⁴ = 64454647 is a prime.

It is a super-2 number, since 2×64471031² = 8313027676405922, 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 (64471037) 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, 245006 + ... + 245268.

It is an arithmetic number, because the mean of its divisors is an integer number (4276800).

Almost surely, 2^64471031 is an apocalyptic number.

64471031 is a deficient number, since it is larger than the sum of its proper divisors (3957769).

64471031 is a wasteful number, since it uses less digits than its factorization.

64471031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 64471031 is about 8029.3854683905. The cubic root of 64471031 is about 400.9789169331.

Adding to 64471031 its reverse (13017446), we get a palindrome (77488477).

The spelling of 64471031 in words is "sixty-four million, four hundred seventy-one thousand, thirty-one".