1312523111 has 16 divisors (see below), whose sum is σ = 1360722240. Its totient is φ = 1265322240.

The previous prime is 1312523101. The next prime is 1312523123. The reversal of 1312523111 is 1113252131.

It is not a de Polignac number, because 1312523111 - 2¹⁰ = 1312522087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312523101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2140841 + ... + 2141453.

It is an arithmetic number, because the mean of its divisors is an integer number (85045140).

Almost surely, 2^1312523111 is an apocalyptic number.

1312523111 is a deficient number, since it is larger than the sum of its proper divisors (48199129).

1312523111 is an equidigital number, since it uses as much as digits as its factorization.

1312523111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1306.

The product of its digits is 180, while the sum is 20.

The square root of 1312523111 is about 36228.7608261723. The cubic root of 1312523111 is about 1094.8862112877.

Adding to 1312523111 its reverse (1113252131), we get a palindrome (2425775242).

The spelling of 1312523111 in words is "one billion, three hundred twelve million, five hundred twenty-three thousand, one hundred eleven".