131501434 has 4 divisors (see below), whose sum is σ = 197252154. Its totient is φ = 65750716.

The previous prime is 131501431. The next prime is 131501437. The reversal of 131501434 is 434105131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 434105131 = 3079 ⋅140989.

It is an interprime number because it is at equal distance from previous prime (131501431) and next prime (131501437).

It can be written as a sum of positive squares in only one way, i.e., 126225225 + 5276209 = 11235^2 + 2297^2 .

It is not an unprimeable number, because it can be changed into a prime (131501431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32875357 + ... + 32875360.

Almost surely, 2^131501434 is an apocalyptic number.

131501434 is a deficient number, since it is larger than the sum of its proper divisors (65750720).

131501434 is an equidigital number, since it uses as much as digits as its factorization.

131501434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65750719.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 131501434 is about 11467.4074663805. The cubic root of 131501434 is about 508.5224877232.

Adding to 131501434 its reverse (434105131), we get a palindrome (565606565).

The spelling of 131501434 in words is "one hundred thirty-one million, five hundred one thousand, four hundred thirty-four".