1311213141 has 72 divisors (see below), whose sum is σ = 2324859264. Its totient is φ = 696263040.

The previous prime is 1311213133. The next prime is 1311213149. The reversal of 1311213141 is 1413121131.

It is a happy number.

1311213141 is a `hidden beast` number, since 1 + 311 + 213 + 141 = 666.

It is an interprime number because it is at equal distance from previous prime (1311213133) and next prime (1311213149).

It is not a de Polignac number, because 1311213141 - 2³ = 1311213133 is a prime.

It is a super-2 number, since 2×1311213141² = 3438559802262171762, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311213149) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1983351 + ... + 1984011.

It is an arithmetic number, because the mean of its divisors is an integer number (32289712).

Almost surely, 2^1311213141 is an apocalyptic number.

It is an amenable number.

1311213141 is a deficient number, since it is larger than the sum of its proper divisors (1013646123).

1311213141 is a wasteful number, since it uses less digits than its factorization.

1311213141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771 (or 731 counting only the distinct ones).

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

The square root of 1311213141 is about 36210.6771684817. The cubic root of 1311213141 is about 1094.5218378906.

Adding to 1311213141 its reverse (1413121131), we get a palindrome (2724334272).

The spelling of 1311213141 in words is "one billion, three hundred eleven million, two hundred thirteen thousand, one hundred forty-one".