431780953 has 2 divisors, whose sum is σ = 431780954. Its totient is φ = 431780952.

The previous prime is 431780933. The next prime is 431780957. The reversal of 431780953 is 359087134.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 425885769 + 5895184 = 20637^2 + 2428^2 .

It is a cyclic number.

It is not a de Polignac number, because 431780953 - 2⁹ = 431780441 is a prime.

It is not a weakly prime, because it can be changed into another prime (431780957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215890476 + 215890477.

It is an arithmetic number, because the mean of its divisors is an integer number (215890477).

Almost surely, 2^431780953 is an apocalyptic number.

It is an amenable number.

431780953 is a deficient number, since it is larger than the sum of its proper divisors (1).

431780953 is an equidigital number, since it uses as much as digits as its factorization.

431780953 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 431780953 is about 20779.3395708333. The cubic root of 431780953 is about 755.8248389253.

The spelling of 431780953 in words is "four hundred thirty-one million, seven hundred eighty thousand, nine hundred fifty-three".