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1312021314 = 2348098897
BaseRepresentation
bin100111000110011…
…1101101101000010
310101102210120220000
41032030331231002
510141334140224
6334105100430
744340666012
oct11614755502
93342716800
101312021314
1161366903a
12307487716
1317ba86896
14c636dc42
157a2b70c9
hex4e33db42

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, 21312021314 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".

Divisors: 1 2 3 6 9 18 27 54 81 162 8098897 16197794 24296691 48593382 72890073 145780146 218670219 437340438 656010657 1312021314