203010232109 has 2 divisors, whose sum is σ = 203010232110. Its totient is φ = 203010232108.

The previous prime is 203010232091. The next prime is 203010232111. The reversal of 203010232109 is 901232010302.

Together with previous prime (203010232091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 174601129609 + 28409102500 = 417853^2 + 168550^2 .

It is a cyclic number.

It is not a de Polignac number, because 203010232109 - 2¹² = 203010228013 is a prime.

Together with 203010232111, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203010232129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101505116054 + 101505116055.

It is an arithmetic number, because the mean of its divisors is an integer number (101505116055).

Almost surely, 2^203010232109 is an apocalyptic number.

It is an amenable number.

203010232109 is a deficient number, since it is larger than the sum of its proper divisors (1).

203010232109 is an equidigital number, since it uses as much as digits as its factorization.

203010232109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 23.

The spelling of 203010232109 in words is "two hundred three billion, ten million, two hundred thirty-two thousand, one hundred nine".