231613429 has 2 divisors, whose sum is σ = 231613430. Its totient is φ = 231613428.

The previous prime is 231613391. The next prime is 231613441. The reversal of 231613429 is 924316132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 136843204 + 94770225 = 11698^2 + 9735^2 .

It is a cyclic number.

It is not a de Polignac number, because 231613429 - 2⁹ = 231612917 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 231613429.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231614429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115806714 + 115806715.

It is an arithmetic number, because the mean of its divisors is an integer number (115806715).

Almost surely, 2^231613429 is an apocalyptic number.

It is an amenable number.

231613429 is a deficient number, since it is larger than the sum of its proper divisors (1).

231613429 is an equidigital number, since it uses as much as digits as its factorization.

231613429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 31.

The square root of 231613429 is about 15218.8511064403. The cubic root of 231613429 is about 614.1218913292.

The spelling of 231613429 in words is "two hundred thirty-one million, six hundred thirteen thousand, four hundred twenty-nine".