2011312317 has 32 divisors (see below), whose sum is σ = 3287070720. Its totient is φ = 1068275520.

The previous prime is 2011312307. The next prime is 2011312319. The reversal of 2011312317 is 7132131102.

It is a happy number.

It is not a de Polignac number, because 2011312317 - 2⁶ = 2011312253 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 2011312293 and 2011312302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011312319) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26409 + ... + 68702.

It is an arithmetic number, because the mean of its divisors is an integer number (102720960).

Almost surely, 2^2011312317 is an apocalyptic number.

It is an amenable number.

2011312317 is a deficient number, since it is larger than the sum of its proper divisors (1275758403).

2011312317 is a wasteful number, since it uses less digits than its factorization.

2011312317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95193.

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 2011312317 is about 44847.6567615299. The cubic root of 2011312317 is about 1262.2920230164.

Adding to 2011312317 its reverse (7132131102), we get a palindrome (9143443419).

The spelling of 2011312317 in words is "two billion, eleven million, three hundred twelve thousand, three hundred seventeen".