201515351311 has 16 divisors (see below), whose sum is σ = 205790100480. Its totient is φ = 197270105760.

The previous prime is 201515351269. The next prime is 201515351357. The reversal of 201515351311 is 113153515102.

It is a cyclic number.

It is not a de Polignac number, because 201515351311 - 2¹⁷ = 201515220239 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201515351311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201515351911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47180106 + ... + 47184376.

It is an arithmetic number, because the mean of its divisors is an integer number (12861881280).

Almost surely, 2^201515351311 is an apocalyptic number.

201515351311 is a deficient number, since it is larger than the sum of its proper divisors (4274749169).

201515351311 is a wasteful number, since it uses less digits than its factorization.

201515351311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7494.

The product of its (nonzero) digits is 2250, while the sum is 28.

Adding to 201515351311 its reverse (113153515102), we get a palindrome (314668866413).

It can be divided in two parts, 201515 and 351311, that added together give a triangular number (552826 = T₁₀₅₁).

The spelling of 201515351311 in words is "two hundred one billion, five hundred fifteen million, three hundred fifty-one thousand, three hundred eleven".