1312131210 has 48 divisors (see below), whose sum is σ = 3410001504. Its totient is φ = 322984896.

The previous prime is 1312131199. The next prime is 1312131211. The reversal of 1312131210 is 121312131.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1312131210.

It is not an unprimeable number, because it can be changed into a prime (1312131211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 124332 + ... + 134471.

It is an arithmetic number, because the mean of its divisors is an integer number (71041698).

Almost surely, 2^1312131210 is an apocalyptic number.

1312131210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1312131210 is an abundant number, since it is smaller than the sum of its proper divisors (2097870294).

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

1312131210 is a wasteful number, since it uses less digits than its factorization.

1312131210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258839 (or 258826 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1312131210 is about 36223.3517223351. The cubic root of 1312131210 is about 1094.7772278824. Note that the first 3 decimals are identical.

Adding to 1312131210 its reverse (121312131), we get a palindrome (1433443341).

The spelling of 1312131210 in words is "one billion, three hundred twelve million, one hundred thirty-one thousand, two hundred ten".