431015331421 has 4 divisors (see below), whose sum is σ = 431205459552. Its totient is φ = 430825203292.

The previous prime is 431015331403. The next prime is 431015331451. The reversal of 431015331421 is 124133510134.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 124133510134 = 2 ⋅62066755067.

It is a cyclic number.

It is not a de Polignac number, because 431015331421 - 2⁹ = 431015330909 is a prime.

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 431015331421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431015331451) 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, 95060665 + ... + 95065198.

It is an arithmetic number, because the mean of its divisors is an integer number (107801364888).

Almost surely, 2^431015331421 is an apocalyptic number.

It is an amenable number.

431015331421 is a deficient number, since it is larger than the sum of its proper divisors (190128131).

431015331421 is a wasteful number, since it uses less digits than its factorization.

431015331421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190128130.

The product of its (nonzero) digits is 4320, while the sum is 28.

Adding to 431015331421 its reverse (124133510134), we get a palindrome (555148841555).

The spelling of 431015331421 in words is "four hundred thirty-one billion, fifteen million, three hundred thirty-one thousand, four hundred twenty-one".