427105831 has 2 divisors, whose sum is σ = 427105832. Its totient is φ = 427105830.

The previous prime is 427105793. The next prime is 427105849. The reversal of 427105831 is 138501724.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 427105831 - 2⁷ = 427105703 is a prime.

It is a super-2 number, since 2×427105831² = 364838781748401122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 427105793 and 427105802.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (427105891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213552915 + 213552916.

It is an arithmetic number, because the mean of its divisors is an integer number (213552916).

Almost surely, 2^427105831 is an apocalyptic number.

427105831 is a deficient number, since it is larger than the sum of its proper divisors (1).

427105831 is an equidigital number, since it uses as much as digits as its factorization.

427105831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 427105831 is about 20666.5389216482. The cubic root of 427105831 is about 753.0870279484.

The spelling of 427105831 in words is "four hundred twenty-seven million, one hundred five thousand, eight hundred thirty-one".