131211223132 has 24 divisors (see below), whose sum is σ = 250593728112. Its totient is φ = 59617756800.

The previous prime is 131211223061. The next prime is 131211223133. The reversal of 131211223132 is 231322112131.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131211223133) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 480523 + ... + 702370.

It is an arithmetic number, because the mean of its divisors is an integer number (10441405338).

Almost surely, 2^131211223132 is an apocalyptic number.

It is an amenable number.

131211223132 is a deficient number, since it is larger than the sum of its proper divisors (119382504980).

131211223132 is a wasteful number, since it uses less digits than its factorization.

131211223132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1185429 (or 1185427 counting only the distinct ones).

The product of its digits is 432, while the sum is 22.

Adding to 131211223132 its reverse (231322112131), we get a palindrome (362533335263).

The spelling of 131211223132 in words is "one hundred thirty-one billion, two hundred eleven million, two hundred twenty-three thousand, one hundred thirty-two".