1020002431997 has 2 divisors, whose sum is σ = 1020002431998. Its totient is φ = 1020002431996.

The previous prime is 1020002431991. The next prime is 1020002432041. The reversal of 1020002431997 is 7991342000201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 891326698201 + 128675733796 = 944101^2 + 358714^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020002431997 - 2¹⁰ = 1020002430973 is a prime.

It is a super-2 number, since 2×1020002431997² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1020002431997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020002431991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510001215998 + 510001215999.

It is an arithmetic number, because the mean of its divisors is an integer number (510001215999).

Almost surely, 2^{1020002431997} is an apocalyptic number.

It is an amenable number.

1020002431997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020002431997 is an equidigital number, since it uses as much as digits as its factorization.

1020002431997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 38.

The spelling of 1020002431997 in words is "one trillion, twenty billion, two million, four hundred thirty-one thousand, nine hundred ninety-seven".