131430505 has 8 divisors (see below), whose sum is σ = 166017600. Its totient is φ = 99610416.

The previous prime is 131430493. The next prime is 131430511. The reversal of 131430505 is 505034131.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 131430505 - 2¹¹ = 131428457 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 691645 + ... + 691834.

It is an arithmetic number, because the mean of its divisors is an integer number (20752200).

Almost surely, 2^131430505 is an apocalyptic number.

It is an amenable number.

131430505 is a deficient number, since it is larger than the sum of its proper divisors (34587095).

131430505 is a wasteful number, since it uses less digits than its factorization.

131430505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1383503.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 131430505 is about 11464.3144147393. The cubic root of 131430505 is about 508.4310426408.

Adding to 131430505 its reverse (505034131), we get a palindrome (636464636).

The spelling of 131430505 in words is "one hundred thirty-one million, four hundred thirty thousand, five hundred five".