131431142 has 8 divisors (see below), whose sum is σ = 198138000. Its totient is φ = 65385144.

The previous prime is 131431127. The next prime is 131431147. The reversal of 131431142 is 241134131.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131431147) 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, 164717 + ... + 165512.

It is an arithmetic number, because the mean of its divisors is an integer number (24767250).

Almost surely, 2^131431142 is an apocalyptic number.

131431142 is a deficient number, since it is larger than the sum of its proper divisors (66706858).

131431142 is a wasteful number, since it uses less digits than its factorization.

131431142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330430.

The product of its digits is 288, while the sum is 20.

The square root of 131431142 is about 11464.3421965676. The cubic root of 131431142 is about 508.4318640382.

Adding to 131431142 its reverse (241134131), we get a palindrome (372565273).

The spelling of 131431142 in words is "one hundred thirty-one million, four hundred thirty-one thousand, one hundred forty-two".