1002023431 has 2 divisors, whose sum is σ = 1002023432. Its totient is φ = 1002023430.

The previous prime is 1002023423. The next prime is 1002023443. The reversal of 1002023431 is 1343202001.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1002023431 - 2³ = 1002023423 is a prime.

It is a super-2 number, since 2×1002023431² = 2008101912546023522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1002023411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501011715 + 501011716.

It is an arithmetic number, because the mean of its divisors is an integer number (501011716).

Almost surely, 2^1002023431 is an apocalyptic number.

1002023431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002023431 is an equidigital number, since it uses as much as digits as its factorization.

1002023431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1002023431 is about 31654.7536872426. The cubic root of 1002023431 is about 1000.6740225915.

Adding to 1002023431 its reverse (1343202001), we get a palindrome (2345225432).

The spelling of 1002023431 in words is "one billion, two million, twenty-three thousand, four hundred thirty-one".