431987481306 has 12 divisors (see below), whose sum is σ = 935972876202. Its totient is φ = 143995827096.

The previous prime is 431987481293. The next prime is 431987481307. The reversal of 431987481306 is 603184789134.

431987481306 is a `hidden beast` number, since 4 + 3 + 198 + 74 + 81 + 306 = 666.

It can be written as a sum of positive squares in only one way, i.e., 369979011081 + 62008470225 = 608259^2 + 249015^2 .

It is a super-2 number, since 2×431987481306² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (431987481307) 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, 11999652241 + ... + 11999652276.

Almost surely, 2^431987481306 is an apocalyptic number.

431987481306 is an abundant number, since it is smaller than the sum of its proper divisors (503985394896).

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

431987481306 is a wasteful number, since it uses less digits than its factorization.

431987481306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23999304525 (or 23999304522 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 54.

The spelling of 431987481306 in words is "four hundred thirty-one billion, nine hundred eighty-seven million, four hundred eighty-one thousand, three hundred six".