131002442 has 32 divisors (see below), whose sum is σ = 215592192. Its totient is φ = 59457024.

The previous prime is 131002433. The next prime is 131002447. The reversal of 131002442 is 244200131.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 131002442.

It is not an unprimeable number, because it can be changed into a prime (131002447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116093 + ... + 117215.

It is an arithmetic number, because the mean of its divisors is an integer number (6737256).

Almost surely, 2^131002442 is an apocalyptic number.

131002442 is a deficient number, since it is larger than the sum of its proper divisors (84589750).

131002442 is a wasteful number, since it uses less digits than its factorization.

131002442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1262.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 131002442 is about 11445.6298210278. The cubic root of 131002442 is about 507.8784635990.

Adding to 131002442 its reverse (244200131), we get a palindrome (375202573).

The spelling of 131002442 in words is "one hundred thirty-one million, two thousand, four hundred forty-two".