131440334 has 8 divisors (see below), whose sum is σ = 198182640. Its totient is φ = 65379456.

The previous prime is 131440327. The next prime is 131440339. The reversal of 131440334 is 433044131.

131440334 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×131440334² = 34553122804063112, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131440339) 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, 169874 + ... + 170645.

It is an arithmetic number, because the mean of its divisors is an integer number (24772830).

Almost surely, 2^131440334 is an apocalyptic number.

131440334 is a deficient number, since it is larger than the sum of its proper divisors (66742306).

131440334 is a wasteful number, since it uses less digits than its factorization.

131440334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340714.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 131440334 is about 11464.7430847795. The cubic root of 131440334 is about 508.4437166242.

Adding to 131440334 its reverse (433044131), we get a palindrome (564484465).

The spelling of 131440334 in words is "one hundred thirty-one million, four hundred forty thousand, three hundred thirty-four".