1311302212 has 24 divisors (see below), whose sum is σ = 2537694432. Its totient is φ = 587880000.

The previous prime is 1311302173. The next prime is 1311302281. The reversal of 1311302212 is 2122031131.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 200914 + ... + 207337.

It is an arithmetic number, because the mean of its divisors is an integer number (105737268).

Almost surely, 2^1311302212 is an apocalyptic number.

It is an amenable number.

1311302212 is a deficient number, since it is larger than the sum of its proper divisors (1226392220).

1311302212 is a wasteful number, since it uses less digits than its factorization.

1311302212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408339 (or 408337 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1311302212 is about 36211.9070472683. The cubic root of 1311302212 is about 1094.5466210333.

Adding to 1311302212 its reverse (2122031131), we get a palindrome (3433333343).

The spelling of 1311302212 in words is "one billion, three hundred eleven million, three hundred two thousand, two hundred twelve".