431972377 has 2 divisors, whose sum is σ = 431972378. Its totient is φ = 431972376.

The previous prime is 431972327. The next prime is 431972381. The reversal of 431972377 is 773279134.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 398840841 + 33131536 = 19971^2 + 5756^2 .

It is a cyclic number.

It is not a de Polignac number, because 431972377 - 2²⁷ = 297754649 is a prime.

It is not a weakly prime, because it can be changed into another prime (431972327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215986188 + 215986189.

It is an arithmetic number, because the mean of its divisors is an integer number (215986189).

Almost surely, 2^431972377 is an apocalyptic number.

It is an amenable number.

431972377 is a deficient number, since it is larger than the sum of its proper divisors (1).

431972377 is an equidigital number, since it uses as much as digits as its factorization.

431972377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 222264, while the sum is 43.

The square root of 431972377 is about 20783.9451741001. The cubic root of 431972377 is about 755.9365171865.

The spelling of 431972377 in words is "four hundred thirty-one million, nine hundred seventy-two thousand, three hundred seventy-seven".