312103013231212 has 48 divisors (see below), whose sum is σ = 651354213146112. Its totient is φ = 127941122707200.

The previous prime is 312103013231201. The next prime is 312103013231239. The reversal of 312103013231212 is 212132310301213.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45016212 + ... + 51484612.

It is an arithmetic number, because the mean of its divisors is an integer number (13569879440544).

Almost surely, 2^{312103013231212} is an apocalyptic number.

It is an amenable number.

312103013231212 is an abundant number, since it is smaller than the sum of its proper divisors (339251199914900).

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

312103013231212 is a wasteful number, since it uses less digits than its factorization.

312103013231212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6543358 (or 6543356 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 312103013231212 its reverse (212132310301213), we get a palindrome (524235323532425).

The spelling of 312103013231212 in words is "three hundred twelve trillion, one hundred three billion, thirteen million, two hundred thirty-one thousand, two hundred twelve".