21341401331 has 16 divisors (see below), whose sum is σ = 23199513600. Its totient is φ = 19557352800.

The previous prime is 21341401309. The next prime is 21341401349. The reversal of 21341401331 is 13310414312.

It is a cyclic number.

It is not a de Polignac number, because 21341401331 - 2⁶ = 21341401267 is a prime.

It is a super-2 number, since 2×21341401331² (a number of 21 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 = 21341401297 and 21341401306.

It is not an unprimeable number, because it can be changed into a prime (21341407331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1607840 + ... + 1621058.

It is an arithmetic number, because the mean of its divisors is an integer number (1449969600).

Almost surely, 2^21341401331 is an apocalyptic number.

21341401331 is a deficient number, since it is larger than the sum of its proper divisors (1858112269).

21341401331 is a wasteful number, since it uses less digits than its factorization.

21341401331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16010.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 21341401331 its reverse (13310414312), we get a palindrome (34651815643).

The spelling of 21341401331 in words is "twenty-one billion, three hundred forty-one million, four hundred one thousand, three hundred thirty-one".