131229859 has 2 divisors, whose sum is σ = 131229860. Its totient is φ = 131229858.

The previous prime is 131229811. The next prime is 131229869. The reversal of 131229859 is 958922131.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131229859 is a prime.

It is not a weakly prime, because it can be changed into another prime (131229809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65614929 + 65614930.

It is an arithmetic number, because the mean of its divisors is an integer number (65614930).

Almost surely, 2^131229859 is an apocalyptic number.

131229859 is a deficient number, since it is larger than the sum of its proper divisors (1).

131229859 is an equidigital number, since it uses as much as digits as its factorization.

131229859 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 40.

The square root of 131229859 is about 11455.5601783588. The cubic root of 131229859 is about 508.1721818535.

The spelling of 131229859 in words is "one hundred thirty-one million, two hundred twenty-nine thousand, eight hundred fifty-nine".