312250312061551 has 4 divisors (see below), whose sum is σ = 312250347609592. Its totient is φ = 312250276513512.

The previous prime is 312250312061549. The next prime is 312250312061563. The reversal of 312250312061551 is 155160213052213.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 312250312061551 - 2¹ = 312250312061549 is a prime.

It is a super-3 number, since 3×312250312061551³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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 312250312061551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312250312061581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6015196 + ... + 25703758.

It is an arithmetic number, because the mean of its divisors is an integer number (78062586902398).

Almost surely, 2^{312250312061551} is an apocalyptic number.

312250312061551 is a deficient number, since it is larger than the sum of its proper divisors (35548041).

312250312061551 is a wasteful number, since it uses less digits than its factorization.

312250312061551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35548040.

The product of its (nonzero) digits is 54000, while the sum is 37.

The spelling of 312250312061551 in words is "three hundred twelve trillion, two hundred fifty billion, three hundred twelve million, sixty-one thousand, five hundred fifty-one".