131730442 has 8 divisors (see below), whose sum is σ = 200545056. Its totient is φ = 64882092.

The previous prime is 131730427. The next prime is 131730449. The reversal of 131730442 is 244037131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (131730449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 491398 + ... + 491665.

It is an arithmetic number, because the mean of its divisors is an integer number (25068132).

Almost surely, 2^131730442 is an apocalyptic number.

131730442 is a deficient number, since it is larger than the sum of its proper divisors (68814614).

131730442 is an equidigital number, since it uses as much as digits as its factorization.

131730442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983132.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 131730442 is about 11477.3882917674. The cubic root of 131730442 is about 508.8175115812.

Adding to 131730442 its reverse (244037131), we get a palindrome (375767573).

The spelling of 131730442 in words is "one hundred thirty-one million, seven hundred thirty thousand, four hundred forty-two".