131340342 has 32 divisors (see below), whose sum is σ = 300851712. Its totient is φ = 37445184.

The previous prime is 131340329. The next prime is 131340367. The reversal of 131340342 is 243043131.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 18018 + ... + 24234.

It is an arithmetic number, because the mean of its divisors is an integer number (9401616).

Almost surely, 2^131340342 is an apocalyptic number.

131340342 is an abundant number, since it is smaller than the sum of its proper divisors (169511370).

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

131340342 is a wasteful number, since it uses less digits than its factorization.

131340342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6732.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 131340342 is about 11460.3814072656. The cubic root of 131340342 is about 508.3147526548.

Adding to 131340342 its reverse (243043131), we get a palindrome (374383473).

The spelling of 131340342 in words is "one hundred thirty-one million, three hundred forty thousand, three hundred forty-two".