431532149 has 2 divisors, whose sum is σ = 431532150. Its totient is φ = 431532148.

The previous prime is 431532139. The next prime is 431532163. The reversal of 431532149 is 941235134.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 219247249 + 212284900 = 14807^2 + 14570^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-431532149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (431532109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215766074 + 215766075.

It is an arithmetic number, because the mean of its divisors is an integer number (215766075).

Almost surely, 2^431532149 is an apocalyptic number.

It is an amenable number.

431532149 is a deficient number, since it is larger than the sum of its proper divisors (1).

431532149 is an equidigital number, since it uses as much as digits as its factorization.

431532149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 32.

The square root of 431532149 is about 20773.3518961192. The cubic root of 431532149 is about 755.6796353803.

The spelling of 431532149 in words is "four hundred thirty-one million, five hundred thirty-two thousand, one hundred forty-nine".