1312123012230 has 64 divisors (see below), whose sum is σ = 3178859904000. Its totient is φ = 346592972544.

The previous prime is 1312123012201. The next prime is 1312123012231. The reversal of 1312123012230 is 322103212131.

It is a junction number, because it is equal to n+sod(n) for n = 1312123012197 and 1312123012206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312123012231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45724947 + ... + 45753633.

It is an arithmetic number, because the mean of its divisors is an integer number (49669686000).

Almost surely, 2^{1312123012230} is an apocalyptic number.

1312123012230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1312123012230 is an abundant number, since it is smaller than the sum of its proper divisors (1866736891770).

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

1312123012230 is a wasteful number, since it uses less digits than its factorization.

1312123012230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43053.

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

Adding to 1312123012230 its reverse (322103212131), we get a palindrome (1634226224361).

The spelling of 1312123012230 in words is "one trillion, three hundred twelve billion, one hundred twenty-three million, twelve thousand, two hundred thirty".