864437203431 has 12 divisors (see below), whose sum is σ = 1258463261952. Its totient is φ = 571753740096.

The previous prime is 864437203391. The next prime is 864437203453. The reversal of 864437203431 is 134302734468.

864437203431 is a `hidden beast` number, since 8 + 6 + 4 + 4 + 3 + 7 + 203 + 431 = 666.

It is not a de Polignac number, because 864437203431 - 2⁶ = 864437203367 is a prime.

It is a super-2 number, since 2×864437203431² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864437203031) 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, 378142866 + ... + 378145151.

It is an arithmetic number, because the mean of its divisors is an integer number (104871938496).

Almost surely, 2^864437203431 is an apocalyptic number.

864437203431 is a deficient number, since it is larger than the sum of its proper divisors (394026058521).

864437203431 is a wasteful number, since it uses less digits than its factorization.

864437203431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756288150 (or 756288147 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 45.

Adding to 864437203431 its reverse (134302734468), we get a palindrome (998739937899).

The spelling of 864437203431 in words is "eight hundred sixty-four billion, four hundred thirty-seven million, two hundred three thousand, four hundred thirty-one".