1202313220 has 24 divisors (see below), whose sum is σ = 2547206424. Its totient is φ = 476668416.

The previous prime is 1202313163. The next prime is 1202313241. The reversal of 1202313220 is 223132021.

It can be written as a sum of positive squares in 4 ways, for example, as 39639616 + 1162673604 = 6296^2 + 34098^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1202313194 and 1202313203.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 263739 + ... + 268258.

It is an arithmetic number, because the mean of its divisors is an integer number (106133601).

Almost surely, 2^1202313220 is an apocalyptic number.

1202313220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1202313220 is an abundant number, since it is smaller than the sum of its proper divisors (1344893204).

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

1202313220 is a wasteful number, since it uses less digits than its factorization.

1202313220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532119 (or 532117 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1202313220 is about 34674.3885310181. The cubic root of 1202313220 is about 1063.3409539673.

Adding to 1202313220 its reverse (223132021), we get a palindrome (1425445241).

The spelling of 1202313220 in words is "one billion, two hundred two million, three hundred thirteen thousand, two hundred twenty".