1312192120 has 32 divisors (see below), whose sum is σ = 2966443920. Its totient is φ = 522385920.

The previous prime is 1312192097. The next prime is 1312192121. The reversal of 1312192120 is 212912131.

It is a junction number, because it is equal to n+sod(n) for n = 1312192091 and 1312192100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312192121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69297 + ... + 86176.

Almost surely, 2^1312192120 is an apocalyptic number.

1312192120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1312192120 is an abundant number, since it is smaller than the sum of its proper divisors (1654251800).

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

1312192120 is a wasteful number, since it uses less digits than its factorization.

1312192120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155695 (or 155691 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 1312192120 is about 36224.1924685700. The cubic root of 1312192120 is about 1094.7941677150.

The spelling of 1312192120 in words is "one billion, three hundred twelve million, one hundred ninety-two thousand, one hundred twenty".