201311954677 has 2 divisors, whose sum is σ = 201311954678. Its totient is φ = 201311954676.

The previous prime is 201311954647. The next prime is 201311954687. The reversal of 201311954677 is 776459113102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 163485983556 + 37825971121 = 404334^2 + 194489^2 .

It is a cyclic number.

It is not a de Polignac number, because 201311954677 - 2¹¹ = 201311952629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201311954647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100655977338 + 100655977339.

It is an arithmetic number, because the mean of its divisors is an integer number (100655977339).

Almost surely, 2^201311954677 is an apocalyptic number.

It is an amenable number.

201311954677 is a deficient number, since it is larger than the sum of its proper divisors (1).

201311954677 is an equidigital number, since it uses as much as digits as its factorization.

201311954677 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 317520, while the sum is 46.

The spelling of 201311954677 in words is "two hundred one billion, three hundred eleven million, nine hundred fifty-four thousand, six hundred seventy-seven".