203949231678683 has 2 divisors, whose sum is σ = 203949231678684. Its totient is φ = 203949231678682.

The previous prime is 203949231678671. The next prime is 203949231678721. The reversal of 203949231678683 is 386876132949302.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203949231678683 is a prime.

It is a super-2 number, since 2×203949231678683² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (203949231678083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101974615839341 + 101974615839342.

It is an arithmetic number, because the mean of its divisors is an integer number (101974615839342).

Almost surely, 2^{203949231678683} is an apocalyptic number.

203949231678683 is a deficient number, since it is larger than the sum of its proper divisors (1).

203949231678683 is an equidigital number, since it uses as much as digits as its factorization.

203949231678683 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 564350976, while the sum is 71.

The spelling of 203949231678683 in words is "two hundred three trillion, nine hundred forty-nine billion, two hundred thirty-one million, six hundred seventy-eight thousand, six hundred eighty-three".