1312123422 has 16 divisors (see below), whose sum is σ = 2708900352. Its totient is φ = 423265560.

The previous prime is 1312123399. The next prime is 1312123429. The reversal of 1312123422 is 2243212131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312123429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3527028 + ... + 3527399.

It is an arithmetic number, because the mean of its divisors is an integer number (169306272).

Almost surely, 2^1312123422 is an apocalyptic number.

1312123422 is an abundant number, since it is smaller than the sum of its proper divisors (1396776930).

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

1312123422 is a wasteful number, since it uses less digits than its factorization.

1312123422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7054463.

The product of its digits is 576, while the sum is 21.

The square root of 1312123422 is about 36223.2442224603. The cubic root of 1312123422 is about 1094.7750619044.

Adding to 1312123422 its reverse (2243212131), we get a palindrome (3555335553).

The spelling of 1312123422 in words is "one billion, three hundred twelve million, one hundred twenty-three thousand, four hundred twenty-two".