131223213132 has 48 divisors (see below), whose sum is σ = 334164399744. Its totient is φ = 39747744000.

The previous prime is 131223213109. The next prime is 131223213179. The reversal of 131223213132 is 231312322131.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103332 + ... + 522612.

It is an arithmetic number, because the mean of its divisors is an integer number (6961758328).

Almost surely, 2^131223213132 is an apocalyptic number.

131223213132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

131223213132 is an abundant number, since it is smaller than the sum of its proper divisors (202941186612).

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

131223213132 is a wasteful number, since it uses less digits than its factorization.

131223213132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421670 (or 421668 counting only the distinct ones).

The product of its digits is 1296, while the sum is 24.

Adding to 131223213132 its reverse (231312322131), we get a palindrome (362535535263).

The spelling of 131223213132 in words is "one hundred thirty-one billion, two hundred twenty-three million, two hundred thirteen thousand, one hundred thirty-two".