131216022 has 96 divisors (see below), whose sum is σ = 338644800. Its totient is φ = 36691200.

The previous prime is 131216021. The next prime is 131216051. The reversal of 131216022 is 220612131.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 131215986 and 131216004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131216021) 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, 327022 + ... + 327422.

It is an arithmetic number, because the mean of its divisors is an integer number (3527550).

Almost surely, 2^131216022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131216022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169322400).

131216022 is an abundant number, since it is smaller than the sum of its proper divisors (207428778).

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

131216022 is a wasteful number, since it uses less digits than its factorization.

131216022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483 (or 466 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 131216022 is about 11454.9562199076. The cubic root of 131216022 is about 508.1543205078.

Adding to 131216022 its reverse (220612131), we get a palindrome (351828153).

It can be divided in two parts, 131 and 216022, that added together give a triangular number (216153 = T₆₅₇).

The spelling of 131216022 in words is "one hundred thirty-one million, two hundred sixteen thousand, twenty-two".