1310131222 has 4 divisors (see below), whose sum is σ = 1965196836. Its totient is φ = 655065610.

The previous prime is 1310131201. The next prime is 1310131241. The reversal of 1310131222 is 2221310131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2221310131 = 977 ⋅2273603.

It is a junction number, because it is equal to n+sod(n) for n = 1310131196 and 1310131205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327532804 + ... + 327532807.

It is an arithmetic number, because the mean of its divisors is an integer number (491299209).

Almost surely, 2^1310131222 is an apocalyptic number.

1310131222 is a deficient number, since it is larger than the sum of its proper divisors (655065614).

1310131222 is an equidigital number, since it uses as much as digits as its factorization.

1310131222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655065613.

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

The square root of 1310131222 is about 36195.7348592345. The cubic root of 1310131222 is about 1094.2207147586.

Adding to 1310131222 its reverse (2221310131), we get a palindrome (3531441353).

The spelling of 1310131222 in words is "one billion, three hundred ten million, one hundred thirty-one thousand, two hundred twenty-two".