131405434 has 8 divisors (see below), whose sum is σ = 199483200. Its totient is φ = 64911036.

The previous prime is 131405413. The next prime is 131405459. The reversal of 131405434 is 434504131.

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

It is a junction number, because it is equal to n+sod(n) for n = 131405399 and 131405408.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 395634 + ... + 395965.

It is an arithmetic number, because the mean of its divisors is an integer number (24935400).

Almost surely, 2^131405434 is an apocalyptic number.

131405434 is a deficient number, since it is larger than the sum of its proper divisors (68077766).

131405434 is an equidigital number, since it uses as much as digits as its factorization.

131405434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 791684.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 131405434 is about 11463.2209260748. The cubic root of 131405434 is about 508.3987120306.

Adding to 131405434 its reverse (434504131), we get a palindrome (565909565).

The spelling of 131405434 in words is "one hundred thirty-one million, four hundred five thousand, four hundred thirty-four".