1302111312 has 40 divisors (see below), whose sum is σ = 3435363456. Its totient is φ = 424801536.

The previous prime is 1302111269. The next prime is 1302111313. The reversal of 1302111312 is 2131112031.

It is a happy number.

It is a super-2 number, since 2×1302111312² = 3390987737676722688, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1302111291 and 1302111300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1302111313) by changing a digit.

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, 286333 + ... + 290844.

Almost surely, 2^1302111312 is an apocalyptic number.

1302111312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1302111312 is an abundant number, since it is smaller than the sum of its proper divisors (2133252144).

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

1302111312 is a wasteful number, since it uses less digits than its factorization.

1302111312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577235 (or 577229 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1302111312 is about 36084.7795060466. The cubic root of 1302111312 is about 1091.9834021817.

Adding to 1302111312 its reverse (2131112031), we get a palindrome (3433223343).

The spelling of 1302111312 in words is "one billion, three hundred two million, one hundred eleven thousand, three hundred twelve".