131221314343110 has 64 divisors (see below), whose sum is σ = 315011297196288. Its totient is φ = 34983446953344.

The previous prime is 131221314343099. The next prime is 131221314343139. The reversal of 131221314343110 is 11343413122131.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2261900464 + ... + 2261958476.

It is an arithmetic number, because the mean of its divisors is an integer number (4922051518692).

Almost surely, 2^{131221314343110} is an apocalyptic number.

131221314343110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131221314343110 is an abundant number, since it is smaller than the sum of its proper divisors (183789982853178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131221314343110 is a wasteful number, since it uses less digits than its factorization.

131221314343110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75909.

The product of its (nonzero) digits is 5184, while the sum is 30.

Adding to 131221314343110 its reverse (11343413122131), we get a palindrome (142564727465241).

The spelling of 131221314343110 in words is "one hundred thirty-one trillion, two hundred twenty-one billion, three hundred fourteen million, three hundred forty-three thousand, one hundred ten".