431203330981 has 2 divisors, whose sum is σ = 431203330982. Its totient is φ = 431203330980.

The previous prime is 431203330969. The next prime is 431203331003. The reversal of 431203330981 is 189033302134.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 422975933956 + 8227397025 = 650366^2 + 90705^2 .

It is a cyclic number.

It is not a de Polignac number, because 431203330981 - 2⁷ = 431203330853 is a prime.

It is a super-2 number, since 2×431203330981² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 431203330981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (431203334981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215601665490 + 215601665491.

It is an arithmetic number, because the mean of its divisors is an integer number (215601665491).

Almost surely, 2^431203330981 is an apocalyptic number.

It is an amenable number.

431203330981 is a deficient number, since it is larger than the sum of its proper divisors (1).

431203330981 is an equidigital number, since it uses as much as digits as its factorization.

431203330981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 37.

The spelling of 431203330981 in words is "four hundred thirty-one billion, two hundred three million, three hundred thirty thousand, nine hundred eighty-one".