21431133124313 has 8 divisors (see below), whose sum is σ = 23563507860480. Its totient is φ = 19329440039280.

The previous prime is 21431133124279. The next prime is 21431133124321. The reversal of 21431133124313 is 31342133113412.

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

It is a cyclic number.

It is not a de Polignac number, because 21431133124313 - 2¹² = 21431133120217 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 21431133124313.

It is not an unprimeable number, because it can be changed into a prime (21431133124343) 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, 7670411318 + ... + 7670414111.

It is an arithmetic number, because the mean of its divisors is an integer number (2945438482560).

Almost surely, 2^{21431133124313} is an apocalyptic number.

It is an amenable number.

21431133124313 is a deficient number, since it is larger than the sum of its proper divisors (2132374736167).

21431133124313 is a wasteful number, since it uses less digits than its factorization.

21431133124313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15340825567.

The product of its digits is 15552, while the sum is 32.

Adding to 21431133124313 its reverse (31342133113412), we get a palindrome (52773266237725).

The spelling of 21431133124313 in words is "twenty-one trillion, four hundred thirty-one billion, one hundred thirty-three million, one hundred twenty-four thousand, three hundred thirteen".