431234543405 has 4 divisors (see below), whose sum is σ = 517481452092. Its totient is φ = 344987634720.

The previous prime is 431234543381. The next prime is 431234543429. The reversal of 431234543405 is 504345432134.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (431234543381) and next prime (431234543429).

It can be written as a sum of positive squares in 2 ways, for example, as 184338846409 + 246895696996 = 429347^2 + 496886^2 .

It is not a de Polignac number, because 431234543405 - 2¹⁰ = 431234542381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43123454336 + ... + 43123454345.

It is an arithmetic number, because the mean of its divisors is an integer number (129370363023).

Almost surely, 2^431234543405 is an apocalyptic number.

It is an amenable number.

431234543405 is a deficient number, since it is larger than the sum of its proper divisors (86246908687).

431234543405 is an equidigital number, since it uses as much as digits as its factorization.

431234543405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86246908686.

The product of its (nonzero) digits is 345600, while the sum is 38.

Adding to 431234543405 its reverse (504345432134), we get a palindrome (935579975539).

The spelling of 431234543405 in words is "four hundred thirty-one billion, two hundred thirty-four million, five hundred forty-three thousand, four hundred five".