2312001997 has 2 divisors, whose sum is σ = 2312001998. Its totient is φ = 2312001996.

The previous prime is 2312001983. The next prime is 2312002019. The reversal of 2312001997 is 7991002132.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1643572681 + 668429316 = 40541^2 + 25854^2 .

It is a cyclic number.

It is not a de Polignac number, because 2312001997 - 2³¹ = 164518349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2312001977) 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, 1156000998 + 1156000999.

It is an arithmetic number, because the mean of its divisors is an integer number (1156000999).

Almost surely, 2^2312001997 is an apocalyptic number.

It is an amenable number.

2312001997 is a deficient number, since it is larger than the sum of its proper divisors (1).

2312001997 is an equidigital number, since it uses as much as digits as its factorization.

2312001997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 2312001997 is about 48083.2818867431. The cubic root of 2312001997 is about 1322.2981844050.

The spelling of 2312001997 in words is "two billion, three hundred twelve million, one thousand, nine hundred ninety-seven".