1312155102 has 32 divisors (see below), whose sum is σ = 2643462144. Its totient is φ = 434203200.

The previous prime is 1312155101. The next prime is 1312155109. The reversal of 1312155102 is 2015512131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312155101) 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 15 ways as a sum of consecutive naturals, for example, 791058 + ... + 792714.

It is an arithmetic number, because the mean of its divisors is an integer number (82608192).

Almost surely, 2^1312155102 is an apocalyptic number.

1312155102 is an abundant number, since it is smaller than the sum of its proper divisors (1331307042).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1312155102 is a wasteful number, since it uses less digits than its factorization.

1312155102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2544.

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 1312155102 is about 36223.6815080963. The cubic root of 1312155102 is about 1094.7838726088.

Adding to 1312155102 its reverse (2015512131), we get a palindrome (3327667233).

The spelling of 1312155102 in words is "one billion, three hundred twelve million, one hundred fifty-five thousand, one hundred two".