431142140431 has 4 divisors (see below), whose sum is σ = 433888268872. Its totient is φ = 428396011992.

The previous prime is 431142140383. The next prime is 431142140437. The reversal of 431142140431 is 134041241134.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134041241134 = 2 ⋅67020620567.

It is a cyclic number.

It is not a de Polignac number, because 431142140431 - 2⁹ = 431142139919 is a prime.

It is a super-2 number, since 2×431142140431² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 431142140431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431142140437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1373063985 + ... + 1373064298.

It is an arithmetic number, because the mean of its divisors is an integer number (108472067218).

Almost surely, 2^431142140431 is an apocalyptic number.

431142140431 is a deficient number, since it is larger than the sum of its proper divisors (2746128441).

431142140431 is a wasteful number, since it uses less digits than its factorization.

431142140431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2746128440.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 431142140431 its reverse (134041241134), we get a palindrome (565183381565).

The spelling of 431142140431 in words is "four hundred thirty-one billion, one hundred forty-two million, one hundred forty thousand, four hundred thirty-one".