131123029 has 2 divisors, whose sum is σ = 131123030. Its totient is φ = 131123028.

The previous prime is 131122969. The next prime is 131123033. The reversal of 131123029 is 920321131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127644804 + 3478225 = 11298^2 + 1865^2 .

It is a cyclic number.

It is not a de Polignac number, because 131123029 - 2²³ = 122734421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131123059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65561514 + 65561515.

It is an arithmetic number, because the mean of its divisors is an integer number (65561515).

Almost surely, 2^131123029 is an apocalyptic number.

It is an amenable number.

131123029 is a deficient number, since it is larger than the sum of its proper divisors (1).

131123029 is an equidigital number, since it uses as much as digits as its factorization.

131123029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 131123029 is about 11450.8964277911. The cubic root of 131123029 is about 508.0342488844.

The spelling of 131123029 in words is "one hundred thirty-one million, one hundred twenty-three thousand, twenty-nine".