1000423631 has 2 divisors, whose sum is σ = 1000423632. Its totient is φ = 1000423630.

The previous prime is 1000423603. The next prime is 1000423637. The reversal of 1000423631 is 1363240001.

1000423631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1000423631 - 2²² = 996229327 is a prime.

It is a super-2 number, since 2×1000423631² = 2001694882926448322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1000423637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500211815 + 500211816.

It is an arithmetic number, because the mean of its divisors is an integer number (500211816).

Almost surely, 2^1000423631 is an apocalyptic number.

1000423631 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000423631 is an equidigital number, since it uses as much as digits as its factorization.

1000423631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 1000423631 is about 31629.4740866806. The cubic root of 1000423631 is about 1000.1411903977.

Adding to 1000423631 its reverse (1363240001), we get a palindrome (2363663632).

The spelling of 1000423631 in words is "one billion, four hundred twenty-three thousand, six hundred thirty-one".