2031340662397 has 2 divisors, whose sum is σ = 2031340662398. Its totient is φ = 2031340662396.

The previous prime is 2031340662353. The next prime is 2031340662401. The reversal of 2031340662397 is 7932660431302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2028043720836 + 3296941561 = 1424094^2 + 57419^2 .

It is a cyclic number.

It is not a de Polignac number, because 2031340662397 - 2⁷ = 2031340662269 is a prime.

It is a super-4 number, since 4×2031340662397⁴ (a number of 50 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2031340662097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1015670331198 + 1015670331199.

It is an arithmetic number, because the mean of its divisors is an integer number (1015670331199).

Almost surely, 2^{2031340662397} is an apocalyptic number.

It is an amenable number.

2031340662397 is a deficient number, since it is larger than the sum of its proper divisors (1).

2031340662397 is an equidigital number, since it uses as much as digits as its factorization.

2031340662397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 979776, while the sum is 46.

The spelling of 2031340662397 in words is "two trillion, thirty-one billion, three hundred forty million, six hundred sixty-two thousand, three hundred ninety-seven".