1311120411 has 4 divisors (see below), whose sum is σ = 1748160552. Its totient is φ = 874080272.

The previous prime is 1311120409. The next prime is 1311120431. The reversal of 1311120411 is 1140211131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1311120411 - 2¹ = 1311120409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1311120401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218520066 + ... + 218520071.

It is an arithmetic number, because the mean of its divisors is an integer number (437040138).

Almost surely, 2^1311120411 is an apocalyptic number.

1311120411 is a deficient number, since it is larger than the sum of its proper divisors (437040141).

1311120411 is an equidigital number, since it uses as much as digits as its factorization.

1311120411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437040140.

The product of its (nonzero) digits is 24, while the sum is 15.

The square root of 1311120411 is about 36209.3967223979. The cubic root of 1311120411 is about 1094.4960354741.

Adding to 1311120411 its reverse (1140211131), we get a palindrome (2451331542).

The spelling of 1311120411 in words is "one billion, three hundred eleven million, one hundred twenty thousand, four hundred eleven".