431987481307 has 2 divisors, whose sum is σ = 431987481308. Its totient is φ = 431987481306.

The previous prime is 431987481293. The next prime is 431987481319. The reversal of 431987481307 is 703184789134.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-431987481307 is a prime.

It is a super-2 number, since 2×431987481307² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (431987481377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215993740653 + 215993740654.

It is an arithmetic number, because the mean of its divisors is an integer number (215993740654).

Almost surely, 2^431987481307 is an apocalyptic number.

431987481307 is a deficient number, since it is larger than the sum of its proper divisors (1).

431987481307 is an equidigital number, since it uses as much as digits as its factorization.

431987481307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4064256, while the sum is 55.

The spelling of 431987481307 in words is "four hundred thirty-one billion, nine hundred eighty-seven million, four hundred eighty-one thousand, three hundred seven".