1312021314 has 20 divisors (see below), whose sum is σ = 2939899974. Its totient is φ = 437340384.

The previous prime is 1312021273. The next prime is 1312021327. The reversal of 1312021314 is 4131202131.

It can be written as a sum of positive squares in only one way, i.e., 1088010225 + 224011089 = 32985^2 + 14967^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 4049287 + ... + 4049610.

Almost surely, 2^1312021314 is an apocalyptic number.

1312021314 is an abundant number, since it is smaller than the sum of its proper divisors (1627878660).

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

1312021314 is an equidigital number, since it uses as much as digits as its factorization.

1312021314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8098911 (or 8098902 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1312021314 is about 36221.8347685481. The cubic root of 1312021314 is about 1094.7466631044.

Adding to 1312021314 its reverse (4131202131), we get a palindrome (5443223445).

The spelling of 1312021314 in words is "one billion, three hundred twelve million, twenty-one thousand, three hundred fourteen".