131435662406 has 4 divisors (see below), whose sum is σ = 197153493612. Its totient is φ = 65717831202.

The previous prime is 131435662403. The next prime is 131435662441. The reversal of 131435662406 is 604266534131.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131435662403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32858915600 + ... + 32858915603.

It is an arithmetic number, because the mean of its divisors is an integer number (49288373403).

Almost surely, 2^131435662406 is an apocalyptic number.

131435662406 is a deficient number, since it is larger than the sum of its proper divisors (65717831206).

131435662406 is an equidigital number, since it uses as much as digits as its factorization.

131435662406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65717831205.

The product of its (nonzero) digits is 311040, while the sum is 41.

The spelling of 131435662406 in words is "one hundred thirty-one billion, four hundred thirty-five million, six hundred sixty-two thousand, four hundred six".