1312105922 has 4 divisors (see below), whose sum is σ = 1968158886. Its totient is φ = 656052960.

The previous prime is 1312105919. The next prime is 1312105931. The reversal of 1312105922 is 2295012131.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1274418601 + 37687321 = 35699^2 + 6139^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1312105891 and 1312105900.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328026479 + ... + 328026482.

Almost surely, 2^1312105922 is an apocalyptic number.

1312105922 is a deficient number, since it is larger than the sum of its proper divisors (656052964).

1312105922 is an equidigital number, since it uses as much as digits as its factorization.

1312105922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656052963.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 1312105922 is about 36223.0026640531. The cubic root of 1312105922 is about 1094.7701948194.

The spelling of 1312105922 in words is "one billion, three hundred twelve million, one hundred five thousand, nine hundred twenty-two".