120231409 has 2 divisors, whose sum is σ = 120231410. Its totient is φ = 120231408.

The previous prime is 120231359. The next prime is 120231413. The reversal of 120231409 is 904132021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64400625 + 55830784 = 8025^2 + 7472^2 .

It is a cyclic number.

It is not a de Polignac number, because 120231409 - 2¹³ = 120223217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120231409.

It is not a weakly prime, because it can be changed into another prime (120231479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60115704 + 60115705.

It is an arithmetic number, because the mean of its divisors is an integer number (60115705).

Almost surely, 2^120231409 is an apocalyptic number.

It is an amenable number.

120231409 is a deficient number, since it is larger than the sum of its proper divisors (1).

120231409 is an equidigital number, since it uses as much as digits as its factorization.

120231409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 120231409 is about 10965.0083903297. The cubic root of 120231409 is about 493.5592688730.

The spelling of 120231409 in words is "one hundred twenty million, two hundred thirty-one thousand, four hundred nine".