1313213031322 has 4 divisors (see below), whose sum is σ = 1969819546986. Its totient is φ = 656606515660.

The previous prime is 1313213031283. The next prime is 1313213031353. The reversal of 1313213031322 is 2231303123131.

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., 1024692577441 + 288520453881 = 1012271^2 + 537141^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328303257829 + ... + 328303257832.

Almost surely, 2^{1313213031322} is an apocalyptic number.

1313213031322 is a deficient number, since it is larger than the sum of its proper divisors (656606515664).

1313213031322 is an equidigital number, since it uses as much as digits as its factorization.

1313213031322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656606515663.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 1313213031322 its reverse (2231303123131), we get a palindrome (3544516154453).

The spelling of 1313213031322 in words is "one trillion, three hundred thirteen billion, two hundred thirteen million, thirty-one thousand, three hundred twenty-two".