131570149 has 2 divisors, whose sum is σ = 131570150. Its totient is φ = 131570148.

The previous prime is 131570147. The next prime is 131570161. The reversal of 131570149 is 941075131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103022500 + 28547649 = 10150^2 + 5343^2 .

It is a cyclic number.

It is not a de Polignac number, because 131570149 - 2¹ = 131570147 is a prime.

Together with 131570147, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131570149.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131570141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65785074 + 65785075.

It is an arithmetic number, because the mean of its divisors is an integer number (65785075).

Almost surely, 2^131570149 is an apocalyptic number.

It is an amenable number.

131570149 is a deficient number, since it is larger than the sum of its proper divisors (1).

131570149 is an equidigital number, since it uses as much as digits as its factorization.

131570149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 31.

The square root of 131570149 is about 11470.4031751286. The cubic root of 131570149 is about 508.6110470568.

The spelling of 131570149 in words is "one hundred thirty-one million, five hundred seventy thousand, one hundred forty-nine".