1311140023 has 8 divisors (see below), whose sum is σ = 1337849136. Its totient is φ = 1284504000.

The previous prime is 1311139997. The next prime is 1311140027. The reversal of 1311140023 is 3200411131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1311140023 - 2²¹ = 1309042871 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1311139979 and 1311140006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311140027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18723 + ... + 54523.

It is an arithmetic number, because the mean of its divisors is an integer number (167231142).

Almost surely, 2^1311140023 is an apocalyptic number.

1311140023 is a deficient number, since it is larger than the sum of its proper divisors (26709113).

1311140023 is an equidigital number, since it uses as much as digits as its factorization.

1311140023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36545.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1311140023 is about 36209.6675350658. The cubic root of 1311140023 is about 1094.5014926767.

Adding to 1311140023 its reverse (3200411131), we get a palindrome (4511551154).

The spelling of 1311140023 in words is "one billion, three hundred eleven million, one hundred forty thousand, twenty-three".