131143442 has 16 divisors (see below), whose sum is σ = 202366080. Its totient is φ = 63708528.

The previous prime is 131143433. The next prime is 131143451. The reversal of 131143442 is 244341131.

It is an interprime number because it is at equal distance from previous prime (131143433) and next prime (131143451).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8048 + ... + 18084.

It is an arithmetic number, because the mean of its divisors is an integer number (12647880).

Almost surely, 2^131143442 is an apocalyptic number.

131143442 is a deficient number, since it is larger than the sum of its proper divisors (71222638).

131143442 is a wasteful number, since it uses less digits than its factorization.

131143442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10225.

The product of its digits is 1152, while the sum is 23.

The square root of 131143442 is about 11451.7877207011. The cubic root of 131143442 is about 508.0606108060.

Adding to 131143442 its reverse (244341131), we get a palindrome (375484573).

The spelling of 131143442 in words is "one hundred thirty-one million, one hundred forty-three thousand, four hundred forty-two".