1001312311 has 4 divisors (see below), whose sum is σ = 1015028992. Its totient is φ = 987595632.

The previous prime is 1001312303. The next prime is 1001312327. The reversal of 1001312311 is 1132131001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1132131001 = 23 ⋅49223087.

It is a cyclic number.

It is not a de Polignac number, because 1001312311 - 2³ = 1001312303 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1001312291 and 1001312300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001312341) 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, 6858231 + ... + 6858376.

It is an arithmetic number, because the mean of its divisors is an integer number (253757248).

Almost surely, 2^1001312311 is an apocalyptic number.

1001312311 is a deficient number, since it is larger than the sum of its proper divisors (13716681).

1001312311 is an equidigital number, since it uses as much as digits as its factorization.

1001312311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13716680.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1001312311 is about 31643.5192575036. The cubic root of 1001312311 is about 1000.4372457883.

Adding to 1001312311 its reverse (1132131001), we get a palindrome (2133443312).

The spelling of 1001312311 in words is "one billion, one million, three hundred twelve thousand, three hundred eleven".