201311012069 has 2 divisors, whose sum is σ = 201311012070. Its totient is φ = 201311012068.

The previous prime is 201311012051. The next prime is 201311012143. The reversal of 201311012069 is 960210113102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 173468085025 + 27842927044 = 416495^2 + 166862^2 .

It is a cyclic number.

It is not a de Polignac number, because 201311012069 - 2⁸ = 201311011813 is a prime.

It is a super-2 number, since 2×201311012069² (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 (201311012869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100655506034 + 100655506035.

It is an arithmetic number, because the mean of its divisors is an integer number (100655506035).

Almost surely, 2^201311012069 is an apocalyptic number.

It is an amenable number.

201311012069 is a deficient number, since it is larger than the sum of its proper divisors (1).

201311012069 is an equidigital number, since it uses as much as digits as its factorization.

201311012069 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 26.

The spelling of 201311012069 in words is "two hundred one billion, three hundred eleven million, twelve thousand, sixty-nine".