131554345 has 8 divisors (see below), whose sum is σ = 170008776. Its totient is φ = 97147776.

The previous prime is 131554337. The next prime is 131554349. The reversal of 131554345 is 543455131.

It can be written as a sum of positive squares in 4 ways, for example, as 16384 + 131537961 = 128^2 + 11469^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131554345 - 2³ = 131554337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131554349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1011892 + ... + 1012021.

It is an arithmetic number, because the mean of its divisors is an integer number (21251097).

Almost surely, 2^131554345 is an apocalyptic number.

It is an amenable number.

131554345 is a deficient number, since it is larger than the sum of its proper divisors (38454431).

131554345 is a wasteful number, since it uses less digits than its factorization.

131554345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2023931.

The product of its digits is 18000, while the sum is 31.

The square root of 131554345 is about 11469.7142510178. The cubic root of 131554345 is about 508.5906817209.

The spelling of 131554345 in words is "one hundred thirty-one million, five hundred fifty-four thousand, three hundred forty-five".