131000345 has 16 divisors (see below), whose sum is σ = 189114240. Its totient is φ = 85100544.

The previous prime is 131000321. The next prime is 131000357. The reversal of 131000345 is 543000131.

It is not a de Polignac number, because 131000345 - 2⁶ = 131000281 is a prime.

It is a super-2 number, since 2×131000345² = 34322180780238050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97832 + ... + 99161.

It is an arithmetic number, because the mean of its divisors is an integer number (11819640).

Almost surely, 2^131000345 is an apocalyptic number.

It is an amenable number.

131000345 is a deficient number, since it is larger than the sum of its proper divisors (58113895).

131000345 is a wasteful number, since it uses less digits than its factorization.

131000345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197024.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 131000345 is about 11445.5382136447. The cubic root of 131000345 is about 507.8757536576.

Adding to 131000345 its reverse (543000131), we get a palindrome (674000476).

The spelling of 131000345 in words is "one hundred thirty-one million, three hundred forty-five", and thus it is an aban number.