131222223 has 48 divisors (see below), whose sum is σ = 213801120. Its totient is φ = 76876800.

The previous prime is 131222209. The next prime is 131222237. The reversal of 131222223 is 322222131.

It is an interprime number because it is at equal distance from previous prime (131222209) and next prime (131222237).

It is not a de Polignac number, because 131222223 - 2⁶ = 131222159 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131222196 and 131222205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131222243) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 466843 + ... + 467123.

It is an arithmetic number, because the mean of its divisors is an integer number (4454190).

Almost surely, 2^131222223 is an apocalyptic number.

131222223 is a deficient number, since it is larger than the sum of its proper divisors (82578897).

131222223 is a wasteful number, since it uses less digits than its factorization.

131222223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440 (or 437 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 131222223 is about 11455.2268855750. The cubic root of 131222223 is about 508.1623251586.

Adding to 131222223 its reverse (322222131), we get a palindrome (453444354).

The spelling of 131222223 in words is "one hundred thirty-one million, two hundred twenty-two thousand, two hundred twenty-three".