1300001312 has 24 divisors (see below), whose sum is σ = 2561258700. Its totient is φ = 649522944.

The previous prime is 1300001293. The next prime is 1300001321. The reversal of 1300001312 is 2131000031.

It can be written as a sum of positive squares in 2 ways, for example, as 1153009936 + 146991376 = 33956^2 + 12124^2 .

It is a super-2 number, since 2×1300001312² = 3380006822403442688, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1300001293 and 1300001302.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31514 + ... + 59942.

Almost surely, 2^1300001312 is an apocalyptic number.

It is an amenable number.

1300001312 is a deficient number, since it is larger than the sum of its proper divisors (1261257388).

1300001312 is a wasteful number, since it uses less digits than its factorization.

1300001312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29868 (or 29860 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 1300001312 is about 36055.5309488017. The cubic root of 1300001312 is about 1091.3932502167.

Adding to 1300001312 its reverse (2131000031), we get a palindrome (3431001343).

The spelling of 1300001312 in words is "one billion, three hundred million, one thousand, three hundred twelve".