201113304251 has 4 divisors (see below), whose sum is σ = 202581284712. Its totient is φ = 199645323792.

The previous prime is 201113304247. The next prime is 201113304257. The reversal of 201113304251 is 152403311102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 201113304251 - 2² = 201113304247 is a prime.

It is a super-2 number, since 2×201113304251² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201113304257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 733990025 + ... + 733990298.

It is an arithmetic number, because the mean of its divisors is an integer number (50645321178).

Almost surely, 2^201113304251 is an apocalyptic number.

201113304251 is a deficient number, since it is larger than the sum of its proper divisors (1467980461).

201113304251 is a wasteful number, since it uses less digits than its factorization.

201113304251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1467980460.

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 201113304251 its reverse (152403311102), we get a palindrome (353516615353).

The spelling of 201113304251 in words is "two hundred one billion, one hundred thirteen million, three hundred four thousand, two hundred fifty-one".