131244345 has 24 divisors (see below), whose sum is σ = 227760000. Its totient is φ = 69914016.

The previous prime is 131244329. The next prime is 131244361. The reversal of 131244345 is 543442131.

It is a happy number.

131244345 is a `hidden beast` number, since 1 + 312 + 4 + 4 + 345 = 666.

It is an interprime number because it is at equal distance from previous prime (131244329) and next prime (131244361).

It is not a de Polignac number, because 131244345 - 2⁴ = 131244329 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 64656 + ... + 66654.

It is an arithmetic number, because the mean of its divisors is an integer number (9490000).

Almost surely, 2^131244345 is an apocalyptic number.

131244345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131244345 is a deficient number, since it is larger than the sum of its proper divisors (96515655).

131244345 is a wasteful number, since it uses less digits than its factorization.

131244345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3469 (or 3466 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 131244345 is about 11456.1924302972. The cubic root of 131244345 is about 508.1908796088.

Adding to 131244345 its reverse (543442131), we get a palindrome (674686476).

The spelling of 131244345 in words is "one hundred thirty-one million, two hundred forty-four thousand, three hundred forty-five".