1311123114 has 48 divisors (see below), whose sum is σ = 3351329280. Its totient is φ = 362521440.

The previous prime is 1311123091. The next prime is 1311123131. The reversal of 1311123114 is 4113211131.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 163929 + ... + 171740.

It is an arithmetic number, because the mean of its divisors is an integer number (69819360).

Almost surely, 2^1311123114 is an apocalyptic number.

1311123114 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1311123114 is an abundant number, since it is smaller than the sum of its proper divisors (2040206166).

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

1311123114 is a wasteful number, since it uses less digits than its factorization.

1311123114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335715 (or 335712 counting only the distinct ones).

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

The square root of 1311123114 is about 36209.4340469442. The cubic root of 1311123114 is about 1094.4967876096.

Adding to 1311123114 its reverse (4113211131), we get a palindrome (5424334245).

The spelling of 1311123114 in words is "one billion, three hundred eleven million, one hundred twenty-three thousand, one hundred fourteen".