64097431 has 16 divisors (see below), whose sum is σ = 70300000. Its totient is φ = 58226688.

The previous prime is 64097419. The next prime is 64097437. The reversal of 64097431 is 13479046.

It is a happy number.

64097431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 64097431 - 2⁵ = 64097399 is a prime.

It is a super-2 number, since 2×64097431² = 8216961321599522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64097437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50695 + ... + 51943.

It is an arithmetic number, because the mean of its divisors is an integer number (4393750).

Almost surely, 2^64097431 is an apocalyptic number.

64097431 is a deficient number, since it is larger than the sum of its proper divisors (6202569).

64097431 is a wasteful number, since it uses less digits than its factorization.

64097431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1378.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 64097431 is about 8006.0871216843. The cubic root of 64097431 is about 400.2028783336.

The spelling of 64097431 in words is "sixty-four million, ninety-seven thousand, four hundred thirty-one".