131321223220232 has 32 divisors (see below), whose sum is σ = 246425070225600. Its totient is φ = 65607883454400.

The previous prime is 131321223220223. The next prime is 131321223220387. The reversal of 131321223220232 is 232022322123131.

It is a junction number, because it is equal to n+sod(n) for n = 131321223220195 and 131321223220204.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85169507 + ... + 86697677.

It is an arithmetic number, because the mean of its divisors is an integer number (7700783444550).

Almost surely, 2^{131321223220232} is an apocalyptic number.

It is an amenable number.

131321223220232 is a deficient number, since it is larger than the sum of its proper divisors (115103847005368).

131321223220232 is a wasteful number, since it uses less digits than its factorization.

131321223220232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1536797 (or 1536793 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 29.

Adding to 131321223220232 its reverse (232022322123131), we get a palindrome (363343545343363).

The spelling of 131321223220232 in words is "one hundred thirty-one trillion, three hundred twenty-one billion, two hundred twenty-three million, two hundred twenty thousand, two hundred thirty-two".