131574493 has 2 divisors, whose sum is σ = 131574494. Its totient is φ = 131574492.

The previous prime is 131574473. The next prime is 131574523. The reversal of 131574493 is 394475131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68260644 + 63313849 = 8262^2 + 7957^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131574493 is a prime.

It is a super-3 number, since 3×131574493³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131574403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65787246 + 65787247.

It is an arithmetic number, because the mean of its divisors is an integer number (65787247).

Almost surely, 2^131574493 is an apocalyptic number.

It is an amenable number.

131574493 is a deficient number, since it is larger than the sum of its proper divisors (1).

131574493 is an equidigital number, since it uses as much as digits as its factorization.

131574493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 37.

The square root of 131574493 is about 11470.5925304668. The cubic root of 131574493 is about 508.6166445324.

The spelling of 131574493 in words is "one hundred thirty-one million, five hundred seventy-four thousand, four hundred ninety-three".