14312231021 has 8 divisors (see below), whose sum is σ = 15742380288. Its totient is φ = 13011117900.

The previous prime is 14312230993. The next prime is 14312231029. The reversal of 14312231021 is 12013221341.

It is a de Polignac number, because none of the positive numbers 2^k-14312231021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 14312230984 and 14312231002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14312231029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5375165 + ... + 5377826.

It is an arithmetic number, because the mean of its divisors is an integer number (1967797536).

Almost surely, 2^14312231021 is an apocalyptic number.

14312231021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

14312231021 is a deficient number, since it is larger than the sum of its proper divisors (1430149267).

14312231021 is an equidigital number, since it uses as much as digits as its factorization.

14312231021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10753024 (or 10753002 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 14312231021 its reverse (12013221341), we get a palindrome (26325452362).

The spelling of 14312231021 in words is "fourteen billion, three hundred twelve million, two hundred thirty-one thousand, twenty-one".