312130121232 has 20 divisors (see below), whose sum is σ = 806336146640. Its totient is φ = 104043373728.

The previous prime is 312130121227. The next prime is 312130121243. The reversal of 312130121232 is 232121031213.

It is a junction number, because it is equal to n+sod(n) for n = 312130121199 and 312130121208.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3251355382 + ... + 3251355477.

It is an arithmetic number, because the mean of its divisors is an integer number (40316807332).

Almost surely, 2^312130121232 is an apocalyptic number.

It is an amenable number.

312130121232 is an abundant number, since it is smaller than the sum of its proper divisors (494206025408).

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

312130121232 is a wasteful number, since it uses less digits than its factorization.

312130121232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6502710870 (or 6502710864 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 312130121232 its reverse (232121031213), we get a palindrome (544251152445).

The spelling of 312130121232 in words is "three hundred twelve billion, one hundred thirty million, one hundred twenty-one thousand, two hundred thirty-two".