2311157216 has 24 divisors (see below), whose sum is σ = 4554620280. Its totient is φ = 1154428288.

The previous prime is 2311157213. The next prime is 2311157243. The reversal of 2311157216 is 6127511132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2311157213) 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, 2831 + ... + 68046.

It is an arithmetic number, because the mean of its divisors is an integer number (189775845).

Almost surely, 2^2311157216 is an apocalyptic number.

It is an amenable number.

2311157216 is a deficient number, since it is larger than the sum of its proper divisors (2243463064).

2311157216 is a wasteful number, since it uses less digits than its factorization.

2311157216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71906 (or 71898 counting only the distinct ones).

The product of its digits is 2520, while the sum is 29.

The square root of 2311157216 is about 48074.4965236247. The cubic root of 2311157216 is about 1322.1371135431.

Adding to 2311157216 its reverse (6127511132), we get a palindrome (8438668348).

The spelling of 2311157216 in words is "two billion, three hundred eleven million, one hundred fifty-seven thousand, two hundred sixteen".