131158635106 has 4 divisors (see below), whose sum is σ = 196737952662. Its totient is φ = 65579317552.

The previous prime is 131158634987. The next prime is 131158635107. The reversal of 131158635106 is 601536851131.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 68701127881 + 62457507225 = 262109^2 + 249915^2 .

It is not an unprimeable number, because it can be changed into a prime (131158635107) 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 as a sum of consecutive naturals, namely, 32789658775 + ... + 32789658778.

Almost surely, 2^131158635106 is an apocalyptic number.

131158635106 is a deficient number, since it is larger than the sum of its proper divisors (65579317556).

131158635106 is an equidigital number, since it uses as much as digits as its factorization.

131158635106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65579317555.

The product of its (nonzero) digits is 64800, while the sum is 40.

The spelling of 131158635106 in words is "one hundred thirty-one billion, one hundred fifty-eight million, six hundred thirty-five thousand, one hundred six".