397862423281 has 2 divisors, whose sum is σ = 397862423282. Its totient is φ = 397862423280.

The previous prime is 397862423251. The next prime is 397862423311. The reversal of 397862423281 is 182324268793.

It is a balanced prime because it is at equal distance from previous prime (397862423251) and next prime (397862423311).

It can be written as a sum of positive squares in only one way, i.e., 361375311025 + 36487112256 = 601145^2 + 191016^2 .

It is a cyclic number.

It is not a de Polignac number, because 397862423281 - 2¹³ = 397862415089 is a prime.

It is a super-2 number, since 2×397862423281² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (397862423251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198931211640 + 198931211641.

It is an arithmetic number, because the mean of its divisors is an integer number (198931211641).

Almost surely, 2^397862423281 is an apocalyptic number.

It is an amenable number.

397862423281 is a deficient number, since it is larger than the sum of its proper divisors (1).

397862423281 is an equidigital number, since it uses as much as digits as its factorization.

397862423281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6967296, while the sum is 55.

The spelling of 397862423281 in words is "three hundred ninety-seven billion, eight hundred sixty-two million, four hundred twenty-three thousand, two hundred eighty-one".