1300312020 has 72 divisors (see below), whose sum is σ = 4235311584. Its totient is φ = 297213504.

The previous prime is 1300312003. The next prime is 1300312103. The reversal of 1300312020 is 202130031.

It is a happy number.

It is a super-2 number, since 2×1300312020² = 3381622698712960800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1300311987 and 1300312005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 218202 + ... + 224081.

It is an arithmetic number, because the mean of its divisors is an integer number (58823772).

Almost surely, 2^1300312020 is an apocalyptic number.

1300312020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1300312020 is an abundant number, since it is smaller than the sum of its proper divisors (2934999564).

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

1300312020 is a wasteful number, since it uses less digits than its factorization.

1300312020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442309 (or 442300 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 1300312020 is about 36059.8394339187. The cubic root of 1300312020 is about 1091.4801931038.

Adding to 1300312020 its reverse (202130031), we get a palindrome (1502442051).

The spelling of 1300312020 in words is "one billion, three hundred million, three hundred twelve thousand, twenty".