3431232433421 has 4 divisors (see below), whose sum is σ = 3695173389852. Its totient is φ = 3167291476992.

The previous prime is 3431232433399. The next prime is 3431232433493. The reversal of 3431232433421 is 1243342321343.

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

It can be written as a sum of positive squares in 2 ways, for example, as 529490530921 + 2901741902500 = 727661^2 + 1703450^2 .

It is a cyclic number.

It is not a de Polignac number, because 3431232433421 - 2¹⁸ = 3431232171277 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3431232433121) 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, 131970478196 + ... + 131970478221.

It is an arithmetic number, because the mean of its divisors is an integer number (923793347463).

Almost surely, 2^{3431232433421} is an apocalyptic number.

It is an amenable number.

3431232433421 is a deficient number, since it is larger than the sum of its proper divisors (263940956431).

3431232433421 is a wasteful number, since it uses less digits than its factorization.

3431232433421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263940956430.

The product of its digits is 124416, while the sum is 35.

Adding to 3431232433421 its reverse (1243342321343), we get a palindrome (4674574754764).

The spelling of 3431232433421 in words is "three trillion, four hundred thirty-one billion, two hundred thirty-two million, four hundred thirty-three thousand, four hundred twenty-one".