1310321212155 has 256 divisors, whose sum is σ = 2575867392000. Its totient is φ = 629928161280.

The previous prime is 1310321212153. The next prime is 1310321212217. The reversal of 1310321212155 is 5512121230131.

1310321212155 is a `hidden beast` number, since 1 + 310 + 321 + 2 + 1 + 21 + 5 + 5 = 666.

It is not a de Polignac number, because 1310321212155 - 2¹ = 1310321212153 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1310321212153) by changing a digit.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 701831532 + ... + 701833398.

It is an arithmetic number, because the mean of its divisors is an integer number (10061982000).

Almost surely, 2^{1310321212155} is an apocalyptic number.

1310321212155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1310321212155 is a deficient number, since it is larger than the sum of its proper divisors (1265546179845).

1310321212155 is a wasteful number, since it uses less digits than its factorization.

1310321212155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2131 (or 2125 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

Adding to 1310321212155 its reverse (5512121230131), we get a palindrome (6822442442286).

The spelling of 1310321212155 in words is "one trillion, three hundred ten billion, three hundred twenty-one million, two hundred twelve thousand, one hundred fifty-five".