231201029 has 2 divisors, whose sum is σ = 231201030. Its totient is φ = 231201028.

The previous prime is 231201023. The next prime is 231201053. The reversal of 231201029 is 920102132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 188925025 + 42276004 = 13745^2 + 6502^2 .

It is a cyclic number.

It is not a de Polignac number, because 231201029 - 2⁸ = 231200773 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 231201029.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231201023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115600514 + 115600515.

It is an arithmetic number, because the mean of its divisors is an integer number (115600515).

Almost surely, 2^231201029 is an apocalyptic number.

It is an amenable number.

231201029 is a deficient number, since it is larger than the sum of its proper divisors (1).

231201029 is an equidigital number, since it uses as much as digits as its factorization.

231201029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 231201029 is about 15205.2960839308. The cubic root of 231201029 is about 613.7571825779.

The spelling of 231201029 in words is "two hundred thirty-one million, two hundred one thousand, twenty-nine".