131043434 has 4 divisors (see below), whose sum is σ = 196565154. Its totient is φ = 65521716.

The previous prime is 131043427. The next prime is 131043467. The reversal of 131043434 is 434340131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 434340131 = 193 ⋅2250467.

It can be written as a sum of positive squares in only one way, i.e., 92640625 + 38402809 = 9625^2 + 6197^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32760857 + ... + 32760860.

Almost surely, 2^131043434 is an apocalyptic number.

131043434 is a deficient number, since it is larger than the sum of its proper divisors (65521720).

131043434 is an equidigital number, since it uses as much as digits as its factorization.

131043434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65521719.

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

The square root of 131043434 is about 11447.4204081094. The cubic root of 131043434 is about 507.9314315248.

Adding to 131043434 its reverse (434340131), we get a palindrome (565383565).

It can be divided in two parts, 1310 and 43434, that added together give a palindrome (44744).

The spelling of 131043434 in words is "one hundred thirty-one million, forty-three thousand, four hundred thirty-four".