131001229 has 2 divisors, whose sum is σ = 131001230. Its totient is φ = 131001228.

The previous prime is 131001217. The next prime is 131001253. The reversal of 131001229 is 922100131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87796900 + 43204329 = 9370^2 + 6573^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131001229 is a prime.

It is a super-2 number, since 2×131001229² = 34322643999020882, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131001209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65500614 + 65500615.

It is an arithmetic number, because the mean of its divisors is an integer number (65500615).

Almost surely, 2^131001229 is an apocalyptic number.

It is an amenable number.

131001229 is a deficient number, since it is larger than the sum of its proper divisors (1).

131001229 is an equidigital number, since it uses as much as digits as its factorization.

131001229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 131001229 is about 11445.5768312480. The cubic root of 131001229 is about 507.8768960494.

It can be divided in two parts, 13100122 and 9, that added together give a palindrome (13100131).

The spelling of 131001229 in words is "one hundred thirty-one million, one thousand, two hundred twenty-nine".