131306235602 has 16 divisors (see below), whose sum is σ = 197225928000. Its totient is φ = 65564322672.

The previous prime is 131306235601. The next prime is 131306235607. The reversal of 131306235602 is 206532603131.

It is not an unprimeable number, because it can be changed into a prime (131306235601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4593149 + ... + 4621647.

It is an arithmetic number, because the mean of its divisors is an integer number (12326620500).

Almost surely, 2^131306235602 is an apocalyptic number.

131306235602 is a deficient number, since it is larger than the sum of its proper divisors (65919692398).

131306235602 is a wasteful number, since it uses less digits than its factorization.

131306235602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31537.

The product of its (nonzero) digits is 19440, while the sum is 32.

Adding to 131306235602 its reverse (206532603131), we get a palindrome (337838838733).

The spelling of 131306235602 in words is "one hundred thirty-one billion, three hundred six million, two hundred thirty-five thousand, six hundred two".