1020431047 has 2 divisors, whose sum is σ = 1020431048. Its totient is φ = 1020431046.

The previous prime is 1020431039. The next prime is 1020431051. The reversal of 1020431047 is 7401340201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1020431047 - 2³ = 1020431039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020431747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510215523 + 510215524.

It is an arithmetic number, because the mean of its divisors is an integer number (510215524).

Almost surely, 2^1020431047 is an apocalyptic number.

1020431047 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020431047 is an equidigital number, since it uses as much as digits as its factorization.

1020431047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 1020431047 is about 31944.1864350933. The cubic root of 1020431047 is about 1006.7644875313.

Adding to 1020431047 its reverse (7401340201), we get a palindrome (8421771248).

The spelling of 1020431047 in words is "one billion, twenty million, four hundred thirty-one thousand, forty-seven".