1310213122 has 4 divisors (see below), whose sum is σ = 1965319686. Its totient is φ = 655106560.

The previous prime is 1310213111. The next prime is 1310213131. The reversal of 1310213122 is 2213120131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2213120131 = 211 ⋅10488721.

It can be written as a sum of positive squares in only one way, i.e., 1011303601 + 298909521 = 31801^2 + 17289^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1310213096 and 1310213105.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327553279 + ... + 327553282.

Almost surely, 2^1310213122 is an apocalyptic number.

1310213122 is a deficient number, since it is larger than the sum of its proper divisors (655106564).

1310213122 is an equidigital number, since it uses as much as digits as its factorization.

1310213122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655106563.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1310213122 is about 36196.8661903210. The cubic root of 1310213122 is about 1094.2435152252.

Adding to 1310213122 its reverse (2213120131), we get a palindrome (3523333253).

The spelling of 1310213122 in words is "one billion, three hundred ten million, two hundred thirteen thousand, one hundred twenty-two".