131404122 has 24 divisors (see below), whose sum is σ = 286161876. Its totient is φ = 43577856.

The previous prime is 131404121. The next prime is 131404183. The reversal of 131404122 is 221404131.

It can be written as a sum of positive squares in 2 ways, for example, as 90839961 + 40564161 = 9531^2 + 6369^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 131404095 and 131404104.

It is not an unprimeable number, because it can be changed into a prime (131404121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14983 + ... + 22074.

Almost surely, 2^131404122 is an apocalyptic number.

131404122 is an abundant number, since it is smaller than the sum of its proper divisors (154757754).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131404122 is a wasteful number, since it uses less digits than its factorization.

131404122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37262 (or 37259 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 131404122 is about 11463.1636994331. The cubic root of 131404122 is about 508.3970200119.

Adding to 131404122 its reverse (221404131), we get a palindrome (352808253).

Subtracting 131404122 from its reverse (221404131), we obtain a palindrome (90000009).

The spelling of 131404122 in words is "one hundred thirty-one million, four hundred four thousand, one hundred twenty-two".