131431434 has 8 divisors (see below), whose sum is σ = 262862880. Its totient is φ = 43810476.

The previous prime is 131431423. The next prime is 131431439. The reversal of 131431434 is 434134131.

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

131431434 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (131431439) 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, 10952614 + ... + 10952625.

It is an arithmetic number, because the mean of its divisors is an integer number (32857860).

Almost surely, 2^131431434 is an apocalyptic number.

131431434 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

131431434 is a wasteful number, since it uses less digits than its factorization.

131431434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21905244.

The product of its digits is 1728, while the sum is 24.

The square root of 131431434 is about 11464.3549317003. The cubic root of 131431434 is about 508.4322405649.

Adding to 131431434 its reverse (434134131), we get a palindrome (565565565).

The spelling of 131431434 in words is "one hundred thirty-one million, four hundred thirty-one thousand, four hundred thirty-four".