131123122112 has 28 divisors (see below), whose sum is σ = 260630462736. Its totient is φ = 65452454400.

The previous prime is 131123122099. The next prime is 131123122133. The reversal of 131123122112 is 211221321131.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 1666028 + ... + 1742955.

It is an arithmetic number, because the mean of its divisors is an integer number (9308230812).

Almost surely, 2^131123122112 is an apocalyptic number.

It is an amenable number.

131123122112 is a deficient number, since it is larger than the sum of its proper divisors (129507340624).

131123122112 is an equidigital number, since it uses as much as digits as its factorization.

131123122112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3409596 (or 3409586 counting only the distinct ones).

The product of its digits is 144, while the sum is 20.

Adding to 131123122112 its reverse (211221321131), we get a palindrome (342344443243).

The spelling of 131123122112 in words is "one hundred thirty-one billion, one hundred twenty-three million, one hundred twenty-two thousand, one hundred twelve".