431378611 has 2 divisors, whose sum is σ = 431378612. Its totient is φ = 431378610.

The previous prime is 431378599. The next prime is 431378653. The reversal of 431378611 is 116873134.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 431378611 - 2⁵ = 431378579 is a prime.

It is not a weakly prime, because it can be changed into another prime (431378011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215689305 + 215689306.

It is an arithmetic number, because the mean of its divisors is an integer number (215689306).

Almost surely, 2^431378611 is an apocalyptic number.

431378611 is a deficient number, since it is larger than the sum of its proper divisors (1).

431378611 is an equidigital number, since it uses as much as digits as its factorization.

431378611 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 34.

The square root of 431378611 is about 20769.6560154472. The cubic root of 431378611 is about 755.5900018089.

The spelling of 431378611 in words is "four hundred thirty-one million, three hundred seventy-eight thousand, six hundred eleven".