203212993 has 2 divisors, whose sum is σ = 203212994. Its totient is φ = 203212992.

The previous prime is 203212979. The next prime is 203213033. The reversal of 203212993 is 399212302.

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., 182574144 + 20638849 = 13512^2 + 4543^2 .

It is a cyclic number.

It is not a de Polignac number, because 203212993 - 2²⁵ = 169658561 is a prime.

It is not a weakly prime, because it can be changed into another prime (203212973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101606496 + 101606497.

It is an arithmetic number, because the mean of its divisors is an integer number (101606497).

Almost surely, 2^203212993 is an apocalyptic number.

It is an amenable number.

203212993 is a deficient number, since it is larger than the sum of its proper divisors (1).

203212993 is an equidigital number, since it uses as much as digits as its factorization.

203212993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 203212993 is about 14255.2794781442. The cubic root of 203212993 is about 587.9185421350.

The spelling of 203212993 in words is "two hundred three million, two hundred twelve thousand, nine hundred ninety-three".