131051387 has 2 divisors, whose sum is σ = 131051388. Its totient is φ = 131051386.

The previous prime is 131051383. The next prime is 131051423. The reversal of 131051387 is 783150131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131051387 - 2² = 131051383 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (131051381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65525693 + 65525694.

It is an arithmetic number, because the mean of its divisors is an integer number (65525694).

Almost surely, 2^131051387 is an apocalyptic number.

131051387 is a deficient number, since it is larger than the sum of its proper divisors (1).

131051387 is an equidigital number, since it uses as much as digits as its factorization.

131051387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 131051387 is about 11447.7677736754. The cubic root of 131051387 is about 507.9417067362.

The spelling of 131051387 in words is "one hundred thirty-one million, fifty-one thousand, three hundred eighty-seven".