131522412401 has 4 divisors (see below), whose sum is σ = 131523615972. Its totient is φ = 131521208832.

The previous prime is 131522412361. The next prime is 131522412473. The reversal of 131522412401 is 104214225131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 104214225131 = 8059 ⋅12931409.

It can be written as a sum of positive squares in 2 ways, for example, as 9528688225 + 121993724176 = 97615^2 + 349276^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131522412401 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (131522417401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 419456 + ... + 662561.

It is an arithmetic number, because the mean of its divisors is an integer number (32880903993).

Almost surely, 2^131522412401 is an apocalyptic number.

It is an amenable number.

131522412401 is a deficient number, since it is larger than the sum of its proper divisors (1203571).

131522412401 is a wasteful number, since it uses less digits than its factorization.

131522412401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1203570.

The product of its (nonzero) digits is 1920, while the sum is 26.

Adding to 131522412401 its reverse (104214225131), we get a palindrome (235736637532).

The spelling of 131522412401 in words is "one hundred thirty-one billion, five hundred twenty-two million, four hundred twelve thousand, four hundred one".