201331351251 has 8 divisors (see below), whose sum is σ = 298268668560. Its totient is φ = 134220900816.

The previous prime is 201331351241. The next prime is 201331351367. The reversal of 201331351251 is 152153133102.

201331351251 is a `hidden beast` number, since 2 + 0 + 133 + 13 + 512 + 5 + 1 = 666.

201331351251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 201331351251 - 2¹⁸ = 201331089107 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 7456716713 = 201331351251 / (2 + 0 + 1 + 3 + 3 + 1 + 3 + 5 + 1 + 2 + 5 + 1).

It is not an unprimeable number, because it can be changed into a prime (201331351211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3728358330 + ... + 3728358383.

It is an arithmetic number, because the mean of its divisors is an integer number (37283583570).

Almost surely, 2^201331351251 is an apocalyptic number.

201331351251 is a deficient number, since it is larger than the sum of its proper divisors (96937317309).

201331351251 is an equidigital number, since it uses as much as digits as its factorization.

201331351251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7456716722 (or 7456716716 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

Adding to 201331351251 its reverse (152153133102), we get a palindrome (353484484353).

The spelling of 201331351251 in words is "two hundred one billion, three hundred thirty-one million, three hundred fifty-one thousand, two hundred fifty-one".