203340000397 has 2 divisors, whose sum is σ = 203340000398. Its totient is φ = 203340000396.

The previous prime is 203340000359. The next prime is 203340000401. The reversal of 203340000397 is 793000043302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 196420921636 + 6919078761 = 443194^2 + 83181^2 .

It is a cyclic number.

It is not a de Polignac number, because 203340000397 - 2²⁷ = 203205782669 is a prime.

It is a super-2 number, since 2×203340000397² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203340000497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101670000198 + 101670000199.

It is an arithmetic number, because the mean of its divisors is an integer number (101670000199).

Almost surely, 2^203340000397 is an apocalyptic number.

It is an amenable number.

203340000397 is a deficient number, since it is larger than the sum of its proper divisors (1).

203340000397 is an equidigital number, since it uses as much as digits as its factorization.

203340000397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 31.

Adding to 203340000397 its reverse (793000043302), we get a palindrome (996340043699).

The spelling of 203340000397 in words is "two hundred three billion, three hundred forty million, three hundred ninety-seven", and thus it is an aban number.