431430134143421 has 32 divisors (see below), whose sum is σ = 508966281077760. Its totient is φ = 358049308262400.

The previous prime is 431430134143403. The next prime is 431430134143423. The reversal of 431430134143421 is 124341431034134.

It is a cyclic number.

It is not a de Polignac number, because 431430134143421 - 2⁶ = 431430134143357 is a prime.

It is a super-3 number, since 3×431430134143421³ (a number of 45 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431430134143423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13602641 + ... + 32371161.

It is an arithmetic number, because the mean of its divisors is an integer number (15905196283680).

Almost surely, 2^{431430134143421} is an apocalyptic number.

It is an amenable number.

431430134143421 is a deficient number, since it is larger than the sum of its proper divisors (77536146934339).

431430134143421 is a wasteful number, since it uses less digits than its factorization.

431430134143421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18769325.

The product of its (nonzero) digits is 165888, while the sum is 38.

Adding to 431430134143421 its reverse (124341431034134), we get a palindrome (555771565177555).

The spelling of 431430134143421 in words is "four hundred thirty-one trillion, four hundred thirty billion, one hundred thirty-four million, one hundred forty-three thousand, four hundred twenty-one".