131306742 has 96 divisors (see below), whose sum is σ = 350438400. Its totient is φ = 34677504.

The previous prime is 131306737. The next prime is 131306753. The reversal of 131306742 is 247603131.

It is a congruent number.

It is an unprimeable number.

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 in 47 ways as a sum of consecutive naturals, for example, 125859 + ... + 126897.

It is an arithmetic number, because the mean of its divisors is an integer number (3650400).

Almost surely, 2^131306742 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131306742, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175219200).

131306742 is an abundant number, since it is smaller than the sum of its proper divisors (219131658).

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

131306742 is a wasteful number, since it uses less digits than its factorization.

131306742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1130 (or 1127 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 131306742 is about 11458.9153937011. The cubic root of 131306742 is about 508.2714026018.

Adding to 131306742 its reverse (247603131), we get a palindrome (378909873).

The spelling of 131306742 in words is "one hundred thirty-one million, three hundred six thousand, seven hundred forty-two".