431987421306 has 32 divisors (see below), whose sum is σ = 987464419200. Its totient is φ = 123416902656.

The previous prime is 431987421287. The next prime is 431987421323. The reversal of 431987421306 is 603124789134.

It is a super-2 number, since 2×431987421306² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 328630 + ... + 985886.

It is an arithmetic number, because the mean of its divisors is an integer number (30858263100).

Almost surely, 2^431987421306 is an apocalyptic number.

It is a pronic number, being equal to 657257×657258.

431987421306 is an abundant number, since it is smaller than the sum of its proper divisors (555476997894).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

431987421306 is a wasteful number, since it uses less digits than its factorization.

431987421306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672918.

The product of its (nonzero) digits is 870912, while the sum is 48.

The spelling of 431987421306 in words is "four hundred thirty-one billion, nine hundred eighty-seven million, four hundred twenty-one thousand, three hundred six".