312201544211145 has 12 divisors (see below), whose sum is σ = 541149343299396. Its totient is φ = 166507490245920.

The previous prime is 312201544211143. The next prime is 312201544211153. The reversal of 312201544211145 is 541112445102213.

312201544211145 is a `hidden beast` number, since 3 + 1 + 2 + 201 + 5 + 442 + 1 + 1 + 1 + 4 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 221637924225081 + 90563619986064 = 14887509^2 + 9516492^2 .

It is not a de Polignac number, because 312201544211145 - 2¹ = 312201544211143 is a prime.

It is a super-2 number, since 2×312201544211145² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (312201544211143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3468906046746 + ... + 3468906046835.

It is an arithmetic number, because the mean of its divisors is an integer number (45095778608283).

Almost surely, 2^{312201544211145} is an apocalyptic number.

It is an amenable number.

312201544211145 is a deficient number, since it is larger than the sum of its proper divisors (228947799088251).

312201544211145 is a wasteful number, since it uses less digits than its factorization.

312201544211145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6937812093592 (or 6937812093589 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

Adding to 312201544211145 its reverse (541112445102213), we get a palindrome (853313989313358).

The spelling of 312201544211145 in words is "three hundred twelve trillion, two hundred one billion, five hundred forty-four million, two hundred eleven thousand, one hundred forty-five".