201031223069 has 2 divisors, whose sum is σ = 201031223070. Its totient is φ = 201031223068.

The previous prime is 201031223033. The next prime is 201031223179. The reversal of 201031223069 is 960322130102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 198235986169 + 2795236900 = 445237^2 + 52870^2 .

It is a cyclic number.

It is not a de Polignac number, because 201031223069 - 2⁸ = 201031222813 is a prime.

It is a super-2 number, since 2×201031223069² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201031222069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100515611534 + 100515611535.

It is an arithmetic number, because the mean of its divisors is an integer number (100515611535).

Almost surely, 2^201031223069 is an apocalyptic number.

It is an amenable number.

201031223069 is a deficient number, since it is larger than the sum of its proper divisors (1).

201031223069 is an equidigital number, since it uses as much as digits as its factorization.

201031223069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 29.

The spelling of 201031223069 in words is "two hundred one billion, thirty-one million, two hundred twenty-three thousand, sixty-nine".