1303630020 has 144 divisors (see below), whose sum is σ = 4930144128. Its totient is φ = 270881280.

The previous prime is 1303630007. The next prime is 1303630021. The reversal of 1303630020 is 200363031.

It is a happy number.

1303630020 is a `hidden beast` number, since 1 + 30 + 3 + 630 + 0 + 2 + 0 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 1303629975 and 1303630002.

It is not an unprimeable number, because it can be changed into a prime (1303630021) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 33169 + ... + 60888.

It is an arithmetic number, because the mean of its divisors is an integer number (34237112).

Almost surely, 2^1303630020 is an apocalyptic number.

1303630020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1303630020 is an abundant number, since it is smaller than the sum of its proper divisors (3626514108).

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

1303630020 is a wasteful number, since it uses less digits than its factorization.

1303630020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94090 (or 94085 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 1303630020 is about 36105.8169828630. The cubic root of 1303630020 is about 1092.4077795180.

Adding to 1303630020 its reverse (200363031), we get a palindrome (1503993051).

The spelling of 1303630020 in words is "one billion, three hundred three million, six hundred thirty thousand, twenty".