3431531021231 has 8 divisors (see below), whose sum is σ = 3444949551120. Its totient is φ = 3418113005568.

The previous prime is 3431531021221. The next prime is 3431531021239. The reversal of 3431531021231 is 1321201351343.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3431531021231 is a prime.

It is a super-2 number, since 2×3431531021231² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3431531021194 and 3431531021203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3431531021239) 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 7 ways as a sum of consecutive naturals, for example, 18509165 + ... + 18693641.

It is an arithmetic number, because the mean of its divisors is an integer number (430618693890).

Almost surely, 2^{3431531021231} is an apocalyptic number.

3431531021231 is a deficient number, since it is larger than the sum of its proper divisors (13418529889).

3431531021231 is a wasteful number, since it uses less digits than its factorization.

3431531021231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257113.

The product of its (nonzero) digits is 6480, while the sum is 29.

Adding to 3431531021231 its reverse (1321201351343), we get a palindrome (4752732372574).

The spelling of 3431531021231 in words is "three trillion, four hundred thirty-one billion, five hundred thirty-one million, twenty-one thousand, two hundred thirty-one".