431434447 has 2 divisors, whose sum is σ = 431434448. Its totient is φ = 431434446.

The previous prime is 431434433. The next prime is 431434457. The reversal of 431434447 is 744434134.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 431434447 - 2¹¹ = 431432399 is a prime.

It is a super-2 number, since 2×431434447² = 372271364116391618, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (431434427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215717223 + 215717224.

It is an arithmetic number, because the mean of its divisors is an integer number (215717224).

Almost surely, 2^431434447 is an apocalyptic number.

431434447 is a deficient number, since it is larger than the sum of its proper divisors (1).

431434447 is an equidigital number, since it uses as much as digits as its factorization.

431434447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64512, while the sum is 34.

The square root of 431434447 is about 20771.0001444321. Note that the first 3 decimals coincide. The cubic root of 431434447 is about 755.6226006305.

The spelling of 431434447 in words is "four hundred thirty-one million, four hundred thirty-four thousand, four hundred forty-seven".