131000245 has 8 divisors (see below), whose sum is σ = 159777720. Its totient is φ = 103081920.

The previous prime is 131000227. The next prime is 131000251. The reversal of 131000245 is 542000131.

It can be written as a sum of positive squares in 4 ways, for example, as 17918289 + 113081956 = 4233^2 + 10634^2 .

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

It is not a de Polignac number, because 131000245 - 2⁹ = 130999733 is a prime.

It is a super-2 number, since 2×131000245² = 34322128380120050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 214450 + ... + 215059.

It is an arithmetic number, because the mean of its divisors is an integer number (19972215).

Almost surely, 2^131000245 is an apocalyptic number.

It is an amenable number.

131000245 is a deficient number, since it is larger than the sum of its proper divisors (28777475).

131000245 is an equidigital number, since it uses as much as digits as its factorization.

131000245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429575.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 131000245 is about 11445.5338451293. The cubic root of 131000245 is about 507.8756244275.

Adding to 131000245 its reverse (542000131), we get a palindrome (673000376).

The spelling of 131000245 in words is "one hundred thirty-one million, two hundred forty-five", and thus it is an aban number.