131434231 has 8 divisors (see below), whose sum is σ = 134634240. Its totient is φ = 128251128.

The previous prime is 131434217. The next prime is 131434243. The reversal of 131434231 is 132434131.

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 131434231 - 2¹³ = 131426039 is a prime.

It is a super-2 number, since 2×131434231² = 34549914157122722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131434201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12280 + ... + 20338.

It is an arithmetic number, because the mean of its divisors is an integer number (16829280).

Almost surely, 2^131434231 is an apocalyptic number.

131434231 is a deficient number, since it is larger than the sum of its proper divisors (3200009).

131434231 is an equidigital number, since it uses as much as digits as its factorization.

131434231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8453.

The product of its digits is 864, while the sum is 22.

The square root of 131434231 is about 11464.4769178537. The cubic root of 131434231 is about 508.4358471980.

Adding to 131434231 its reverse (132434131), we get a palindrome (263868362).

The spelling of 131434231 in words is "one hundred thirty-one million, four hundred thirty-four thousand, two hundred thirty-one".