1303213311 has 24 divisors (see below), whose sum is σ = 1896017760. Its totient is φ = 862558656.

The previous prime is 1303213291. The next prime is 1303213361. The reversal of 1303213311 is 1133123031.

It is a happy number.

1303213311 is a `hidden beast` number, since 1 + 30 + 321 + 3 + 311 = 666.

It is not a de Polignac number, because 1303213311 - 2⁵ = 1303213279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1303213361) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 835150 + ... + 836708.

It is an arithmetic number, because the mean of its divisors is an integer number (79000740).

Almost surely, 2^1303213311 is an apocalyptic number.

1303213311 is a deficient number, since it is larger than the sum of its proper divisors (592804449).

1303213311 is a wasteful number, since it uses less digits than its factorization.

1303213311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2175 (or 2172 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

The square root of 1303213311 is about 36100.0458586966. The cubic root of 1303213311 is about 1092.2913700412.

Adding to 1303213311 its reverse (1133123031), we get a palindrome (2436336342).

The spelling of 1303213311 in words is "one billion, three hundred three million, two hundred thirteen thousand, three hundred eleven".