131333249 has 2 divisors, whose sum is σ = 131333250. Its totient is φ = 131333248.

The previous prime is 131333231. The next prime is 131333273. The reversal of 131333249 is 942333131.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80425024 + 50908225 = 8968^2 + 7135^2 .

It is a cyclic number.

It is not a de Polignac number, because 131333249 - 2¹² = 131329153 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (131363249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65666624 + 65666625.

It is an arithmetic number, because the mean of its divisors is an integer number (65666625).

Almost surely, 2^131333249 is an apocalyptic number.

It is an amenable number.

131333249 is a deficient number, since it is larger than the sum of its proper divisors (1).

131333249 is an equidigital number, since it uses as much as digits as its factorization.

131333249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5832, while the sum is 29.

The square root of 131333249 is about 11460.0719456729. The cubic root of 131333249 is about 508.3056020227.

The spelling of 131333249 in words is "one hundred thirty-one million, three hundred thirty-three thousand, two hundred forty-nine".