131105405423012 has 48 divisors (see below), whose sum is σ = 242053496832000. Its totient is φ = 61962843396384.

The previous prime is 131105405422991. The next prime is 131105405423101. The reversal of 131105405423012 is 210324504501131.

It is a super-2 number, since 2×131105405423012² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 131105405423012.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 189118439 + ... + 189810417.

It is an arithmetic number, because the mean of its divisors is an integer number (5042781184000).

Almost surely, 2^{131105405423012} is an apocalyptic number.

It is an amenable number.

131105405423012 is a deficient number, since it is larger than the sum of its proper divisors (110948091408988).

131105405423012 is a wasteful number, since it uses less digits than its factorization.

131105405423012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697608 (or 697606 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

Adding to 131105405423012 its reverse (210324504501131), we get a palindrome (341429909924143).

The spelling of 131105405423012 in words is "one hundred thirty-one trillion, one hundred five billion, four hundred five million, four hundred twenty-three thousand, twelve".