131332400401 has 4 divisors (see below), whose sum is σ = 131358091492. Its totient is φ = 131306709312.

The previous prime is 131332400399. The next prime is 131332400417. The reversal of 131332400401 is 104004233131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 53923806225 + 77408594176 = 232215^2 + 278224^2 .

It is a cyclic number.

It is not a de Polignac number, because 131332400401 - 2¹ = 131332400399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131332400201) 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, 12837876 + ... + 12848101.

It is an arithmetic number, because the mean of its divisors is an integer number (32839522873).

Almost surely, 2^131332400401 is an apocalyptic number.

It is an amenable number.

131332400401 is a deficient number, since it is larger than the sum of its proper divisors (25691091).

131332400401 is an equidigital number, since it uses as much as digits as its factorization.

131332400401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25691090.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 131332400401 its reverse (104004233131), we get a palindrome (235336633532).

The spelling of 131332400401 in words is "one hundred thirty-one billion, three hundred thirty-two million, four hundred thousand, four hundred one".