1023001997 has 2 divisors, whose sum is σ = 1023001998. Its totient is φ = 1023001996.

The previous prime is 1023001961. The next prime is 1023002017. The reversal of 1023001997 is 7991003201.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1011939721 + 11062276 = 31811^2 + 3326^2 .

It is a cyclic number.

It is not a de Polignac number, because 1023001997 - 2¹⁰ = 1023000973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1023001597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511500998 + 511500999.

It is an arithmetic number, because the mean of its divisors is an integer number (511500999).

Almost surely, 2^1023001997 is an apocalyptic number.

It is an amenable number.

1023001997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1023001997 is an equidigital number, since it uses as much as digits as its factorization.

1023001997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3402, while the sum is 32.

The square root of 1023001997 is about 31984.4024017958. The cubic root of 1023001997 is about 1007.6092842641.

The spelling of 1023001997 in words is "one billion, twenty-three million, one thousand, nine hundred ninety-seven".