51312312201 has 4 divisors (see below), whose sum is σ = 68416416272. Its totient is φ = 34208208132.

The previous prime is 51312312199. The next prime is 51312312203. The reversal of 51312312201 is 10221321315.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (51312312199) and next prime (51312312203).

It is not a de Polignac number, because 51312312201 - 2¹ = 51312312199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51312312203) 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, 8552052031 + ... + 8552052036.

It is an arithmetic number, because the mean of its divisors is an integer number (17104104068).

Almost surely, 2^51312312201 is an apocalyptic number.

It is an amenable number.

51312312201 is a deficient number, since it is larger than the sum of its proper divisors (17104104071).

51312312201 is a wasteful number, since it uses less digits than its factorization.

51312312201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17104104070.

The product of its (nonzero) digits is 360, while the sum is 21.

Adding to 51312312201 its reverse (10221321315), we get a palindrome (61533633516).

The spelling of 51312312201 in words is "fifty-one billion, three hundred twelve million, three hundred twelve thousand, two hundred one".