431048389 has 2 divisors, whose sum is σ = 431048390. Its totient is φ = 431048388.

The previous prime is 431048381. The next prime is 431048441. The reversal of 431048389 is 983840134.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 256544289 + 174504100 = 16017^2 + 13210^2 .

It is a cyclic number.

It is not a de Polignac number, because 431048389 - 2³ = 431048381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (431048381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215524194 + 215524195.

It is an arithmetic number, because the mean of its divisors is an integer number (215524195).

Almost surely, 2^431048389 is an apocalyptic number.

It is an amenable number.

431048389 is a deficient number, since it is larger than the sum of its proper divisors (1).

431048389 is an equidigital number, since it uses as much as digits as its factorization.

431048389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 431048389 is about 20761.7048673754. The cubic root of 431048389 is about 755.3971502319.

The spelling of 431048389 in words is "four hundred thirty-one million, forty-eight thousand, three hundred eighty-nine".