431443251401 has 2 divisors, whose sum is σ = 431443251402. Its totient is φ = 431443251400.

The previous prime is 431443251391. The next prime is 431443251439. The reversal of 431443251401 is 104152344134.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 424450947001 + 6992304400 = 651499^2 + 83620^2 .

It is a cyclic number.

It is not a de Polignac number, because 431443251401 - 2¹⁰ = 431443250377 is a prime.

It is a super-2 number, since 2×431443251401² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (431443251101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215721625700 + 215721625701.

It is an arithmetic number, because the mean of its divisors is an integer number (215721625701).

Almost surely, 2^431443251401 is an apocalyptic number.

It is an amenable number.

431443251401 is a deficient number, since it is larger than the sum of its proper divisors (1).

431443251401 is an equidigital number, since it uses as much as digits as its factorization.

431443251401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23040, while the sum is 32.

Adding to 431443251401 its reverse (104152344134), we get a palindrome (535595595535).

The spelling of 431443251401 in words is "four hundred thirty-one billion, four hundred forty-three million, two hundred fifty-one thousand, four hundred one".