131222343 has 24 divisors (see below), whose sum is σ = 204492288. Its totient is φ = 74629296.

The previous prime is 131222323. The next prime is 131222353. The reversal of 131222343 is 343222131.

It is not a de Polignac number, because 131222343 - 2¹⁷ = 131091271 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131222323) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30780 + ... + 34782.

It is an arithmetic number, because the mean of its divisors is an integer number (8520512).

Almost surely, 2^131222343 is an apocalyptic number.

131222343 is a deficient number, since it is larger than the sum of its proper divisors (73269945).

131222343 is a wasteful number, since it uses less digits than its factorization.

131222343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4243 (or 4236 counting only the distinct ones).

The product of its digits is 864, while the sum is 21.

The square root of 131222343 is about 11455.2321233574. The cubic root of 131222343 is about 508.1624800598.

Adding to 131222343 its reverse (343222131), we get a palindrome (474444474).

The spelling of 131222343 in words is "one hundred thirty-one million, two hundred twenty-two thousand, three hundred forty-three".