14311431021 has 16 divisors (see below), whose sum is σ = 19873669248. Its totient is φ = 9152337600.

The previous prime is 14311431007. The next prime is 14311431031. The reversal of 14311431021 is 12013411341.

It is not a de Polignac number, because 14311431021 - 2¹¹ = 14311428973 is a prime.

It is a super-2 number, since 2×14311431021² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14311431031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 900090 + ... + 915851.

It is an arithmetic number, because the mean of its divisors is an integer number (1242104328).

Almost surely, 2^14311431021 is an apocalyptic number.

It is an amenable number.

14311431021 is a deficient number, since it is larger than the sum of its proper divisors (5562238227).

14311431021 is a wasteful number, since it uses less digits than its factorization.

14311431021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1816052.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 14311431021 its reverse (12013411341), we get a palindrome (26324842362).

The spelling of 14311431021 in words is "fourteen billion, three hundred eleven million, four hundred thirty-one thousand, twenty-one".