131000320343221 has 16 divisors (see below), whose sum is σ = 150145591317120. Its totient is φ = 111962987104320.

The previous prime is 131000320343197. The next prime is 131000320343327. The reversal of 131000320343221 is 122343023000131.

It is a cyclic number.

It is not a de Polignac number, because 131000320343221 - 2⁹ = 131000320342709 is a prime.

It is a super-2 number, since 2×131000320343221² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131000324343221) 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, 700315 + ... + 16201576.

It is an arithmetic number, because the mean of its divisors is an integer number (9384099457320).

Almost surely, 2^{131000320343221} is an apocalyptic number.

It is an amenable number.

131000320343221 is a deficient number, since it is larger than the sum of its proper divisors (19145270973899).

131000320343221 is a wasteful number, since it uses less digits than its factorization.

131000320343221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16905084.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 131000320343221 its reverse (122343023000131), we get a palindrome (253343343343352).

The spelling of 131000320343221 in words is "one hundred thirty-one trillion, three hundred twenty million, three hundred forty-three thousand, two hundred twenty-one".