64330031431 has 16 divisors (see below), whose sum is σ = 66076686720. Its totient is φ = 62599979520.

The previous prime is 64330031407. The next prime is 64330031471. The reversal of 64330031431 is 13413003346.

It is a cyclic number.

It is not a de Polignac number, because 64330031431 - 2⁵ = 64330031399 is a prime.

It is a super-2 number, since 2×64330031431² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64330031431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64330031471) 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, 7664185 + ... + 7672573.

It is an arithmetic number, because the mean of its divisors is an integer number (4129792920).

Almost surely, 2^64330031431 is an apocalyptic number.

64330031431 is a deficient number, since it is larger than the sum of its proper divisors (1746655289).

64330031431 is a wasteful number, since it uses less digits than its factorization.

64330031431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9354.

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 64330031431 its reverse (13413003346), we get a palindrome (77743034777).

The spelling of 64330031431 in words is "sixty-four billion, three hundred thirty million, thirty-one thousand, four hundred thirty-one".