64328031 has 6 divisors (see below), whose sum is σ = 92918280. Its totient is φ = 42885348.

The previous prime is 64328021. The next prime is 64328087. The reversal of 64328031 is 13082346.

It is a happy number.

It is not a de Polignac number, because 64328031 - 2⁷ = 64327903 is a prime.

It is a super-2 number, since 2×64328031² = 8276191144673922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 64327986 and 64328004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64328021) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3573771 + ... + 3573788.

It is an arithmetic number, because the mean of its divisors is an integer number (15486380).

Almost surely, 2^64328031 is an apocalyptic number.

64328031 is a deficient number, since it is larger than the sum of its proper divisors (28590249).

64328031 is a wasteful number, since it uses less digits than its factorization.

64328031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7147565 (or 7147562 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 64328031 is about 8020.4757340198. The cubic root of 64328031 is about 400.6822336482.

The spelling of 64328031 in words is "sixty-four million, three hundred twenty-eight thousand, thirty-one".