1302312020 has 24 divisors (see below), whose sum is σ = 2738269800. Its totient is φ = 520274432.

The previous prime is 1302312007. The next prime is 1302312023. The reversal of 1302312020 is 202132031.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 747803716 + 554508304 = 27346^2 + 23548^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1302311986 and 1302312004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1302312023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24065 + ... + 56424.

It is an arithmetic number, because the mean of its divisors is an integer number (114094575).

Almost surely, 2^1302312020 is an apocalyptic number.

1302312020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1302312020 is an abundant number, since it is smaller than the sum of its proper divisors (1435957780).

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

1302312020 is a wasteful number, since it uses less digits than its factorization.

1302312020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81307 (or 81305 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1302312020 is about 36087.5604606352. The cubic root of 1302312020 is about 1092.0395055636.

Adding to 1302312020 its reverse (202132031), we get a palindrome (1504444051).

The spelling of 1302312020 in words is "one billion, three hundred two million, three hundred twelve thousand, twenty".