431266343234321 has 16 divisors (see below), whose sum is σ = 496759178711040. Its totient is φ = 366744375889920.

The previous prime is 431266343234303. The next prime is 431266343234327. The reversal of 431266343234321 is 123432343662134.

It is a de Polignac number, because none of the positive numbers 2^k-431266343234321 is a prime.

It is a super-2 number, since 2×431266343234321² (a number of 30 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (431266343234327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 198168461 + ... + 200332901.

It is an arithmetic number, because the mean of its divisors is an integer number (31047448669440).

Almost surely, 2^{431266343234321} is an apocalyptic number.

It is an amenable number.

431266343234321 is a deficient number, since it is larger than the sum of its proper divisors (65492835476719).

431266343234321 is a wasteful number, since it uses less digits than its factorization.

431266343234321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2388704.

The product of its digits is 4478976, while the sum is 47.

Adding to 431266343234321 its reverse (123432343662134), we get a palindrome (554698686896455).

The spelling of 431266343234321 in words is "four hundred thirty-one trillion, two hundred sixty-six billion, three hundred forty-three million, two hundred thirty-four thousand, three hundred twenty-one".