21376103143431 has 8 divisors (see below), whose sum is σ = 28501509216880. Its totient is φ = 14250716249472.

The previous prime is 21376103143429. The next prime is 21376103143433. The reversal of 21376103143431 is 13434130167312.

It is an interprime number because it is at equal distance from previous prime (21376103143429) and next prime (21376103143433).

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

It is not a de Polignac number, because 21376103143431 - 2¹ = 21376103143429 is a prime.

It is a super-2 number, since 2×21376103143431² (a number of 27 digits) contains 22 as substring.

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 21376103143431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21376103143433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1953820 + ... + 6824193.

It is an arithmetic number, because the mean of its divisors is an integer number (3562688652110).

Almost surely, 2^{21376103143431} is an apocalyptic number.

21376103143431 is a deficient number, since it is larger than the sum of its proper divisors (7125406073449).

21376103143431 is an equidigital number, since it uses as much as digits as its factorization.

21376103143431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9589745.

The product of its (nonzero) digits is 108864, while the sum is 39.

The spelling of 21376103143431 in words is "twenty-one trillion, three hundred seventy-six billion, one hundred three million, one hundred forty-three thousand, four hundred thirty-one".