131561074 has 4 divisors (see below), whose sum is σ = 197341614. Its totient is φ = 65780536.

The previous prime is 131561071. The next prime is 131561107. The reversal of 131561074 is 470165131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 470165131 = 3191 ⋅147341.

It can be written as a sum of positive squares in only one way, i.e., 130988025 + 573049 = 11445^2 + 757^2 .

It is not an unprimeable number, because it can be changed into a prime (131561071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32890267 + ... + 32890270.

Almost surely, 2^131561074 is an apocalyptic number.

131561074 is a deficient number, since it is larger than the sum of its proper divisors (65780540).

131561074 is an equidigital number, since it uses as much as digits as its factorization.

131561074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65780539.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 131561074 is about 11470.0075850019. The cubic root of 131561074 is about 508.5993530380.

The spelling of 131561074 in words is "one hundred thirty-one million, five hundred sixty-one thousand, seventy-four".