131242741236 has 30 divisors (see below), whose sum is σ = 343094450930. Its totient is φ = 43747580304.

The previous prime is 131242741207. The next prime is 131242741241. The reversal of 131242741236 is 632147242131.

131242741236 is a `hidden beast` number, since 1 + 312 + 42 + 74 + 1 + 236 = 666.

It can be written as a sum of positive squares in only one way, i.e., 109002984336 + 22239756900 = 330156^2 + 149130^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 131242741236.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 202534771 + ... + 202535418.

Almost surely, 2^131242741236 is an apocalyptic number.

It is an amenable number.

131242741236 is an abundant number, since it is smaller than the sum of its proper divisors (211851709694).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131242741236 is a wasteful number, since it uses less digits than its factorization.

131242741236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405070205 (or 405070194 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

Adding to 131242741236 its reverse (632147242131), we get a palindrome (763389983367).

The spelling of 131242741236 in words is "one hundred thirty-one billion, two hundred forty-two million, seven hundred forty-one thousand, two hundred thirty-six".