131123400122 has 32 divisors (see below), whose sum is σ = 231092797824. Its totient is φ = 55011528000.

The previous prime is 131123400073. The next prime is 131123400127. The reversal of 131123400122 is 221004321131.

It is a super-2 number, since 2×131123400122² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 131123400094 and 131123400103.

It is not an unprimeable number, because it can be changed into a prime (131123400127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4820123 + ... + 4847249.

It is an arithmetic number, because the mean of its divisors is an integer number (7221649932).

Almost surely, 2^131123400122 is an apocalyptic number.

131123400122 is a deficient number, since it is larger than the sum of its proper divisors (99969397702).

131123400122 is a wasteful number, since it uses less digits than its factorization.

131123400122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44054.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 131123400122 its reverse (221004321131), we get a palindrome (352127721253).

The spelling of 131123400122 in words is "one hundred thirty-one billion, one hundred twenty-three million, four hundred thousand, one hundred twenty-two".