131254345 has 4 divisors (see below), whose sum is σ = 157505220. Its totient is φ = 105003472.

The previous prime is 131254339. The next prime is 131254369. The reversal of 131254345 is 543452131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 543452131 = 1051 ⋅517081.

It can be written as a sum of positive squares in 2 ways, for example, as 72318016 + 58936329 = 8504^2 + 7677^2 .

It is a cyclic number.

It is not a de Polignac number, because 131254345 - 2¹³ = 131246153 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13125430 + ... + 13125439.

It is an arithmetic number, because the mean of its divisors is an integer number (39376305).

Almost surely, 2^131254345 is an apocalyptic number.

It is an amenable number.

131254345 is a deficient number, since it is larger than the sum of its proper divisors (26250875).

131254345 is an equidigital number, since it uses as much as digits as its factorization.

131254345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26250874.

The product of its digits is 7200, while the sum is 28.

The square root of 131254345 is about 11456.6288671668. The cubic root of 131254345 is about 508.2037862721.

The spelling of 131254345 in words is "one hundred thirty-one million, two hundred fifty-four thousand, three hundred forty-five".