1313111412 has 30 divisors (see below), whose sum is σ = 3432733458. Its totient is φ = 437703696.

The previous prime is 1313111363. The next prime is 1313111473. The reversal of 1313111412 is 2141113131.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1299890916 + 13220496 = 36054^2 + 3636^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2026083 + ... + 2026730.

Almost surely, 2^1313111412 is an apocalyptic number.

1313111412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1313111412 is an abundant number, since it is smaller than the sum of its proper divisors (2119622046).

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

1313111412 is a wasteful number, since it uses less digits than its factorization.

1313111412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4052829 (or 4052818 counting only the distinct ones).

The product of its digits is 72, while the sum is 18.

The square root of 1313111412 is about 36236.8791702597. The cubic root of 1313111412 is about 1095.0497706783.

Adding to 1313111412 its reverse (2141113131), we get a palindrome (3454224543).

The spelling of 1313111412 in words is "one billion, three hundred thirteen million, one hundred eleven thousand, four hundred twelve".