131412145 has 4 divisors (see below), whose sum is σ = 157694580. Its totient is φ = 105129712.

The previous prime is 131412143. The next prime is 131412173. The reversal of 131412145 is 541214131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 541214131 = 199 ⋅2719669.

It can be written as a sum of positive squares in 2 ways, for example, as 20720704 + 110691441 = 4552^2 + 10521^2 .

It is a cyclic number.

It is not a de Polignac number, because 131412145 - 2¹ = 131412143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131412143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13141210 + ... + 13141219.

It is an arithmetic number, because the mean of its divisors is an integer number (39423645).

Almost surely, 2^131412145 is an apocalyptic number.

It is an amenable number.

131412145 is a deficient number, since it is larger than the sum of its proper divisors (26282435).

131412145 is an equidigital number, since it uses as much as digits as its factorization.

131412145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26282434.

The product of its digits is 480, while the sum is 22.

The square root of 131412145 is about 11463.5136411137. The cubic root of 131412145 is about 508.4073666845.

Adding to 131412145 its reverse (541214131), we get a palindrome (672626276).

The spelling of 131412145 in words is "one hundred thirty-one million, four hundred twelve thousand, one hundred forty-five".