2116262531 has 4 divisors (see below), whose sum is σ = 2134990632. Its totient is φ = 2097534432.

The previous prime is 2116262497. The next prime is 2116262539. The reversal of 2116262531 is 1352626112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2116262531 - 2²² = 2112068227 is a prime.

It is a super-2 number, since 2×2116262531² = 8957134200229051922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2116262494 and 2116262503.

It is not an unprimeable number, because it can be changed into a prime (2116262539) 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, 9363881 + ... + 9364106.

It is an arithmetic number, because the mean of its divisors is an integer number (533747658).

Almost surely, 2^2116262531 is an apocalyptic number.

2116262531 is a deficient number, since it is larger than the sum of its proper divisors (18728101).

2116262531 is a wasteful number, since it uses less digits than its factorization.

2116262531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18728100.

The product of its digits is 4320, while the sum is 29.

The square root of 2116262531 is about 46002.8535093205. The cubic root of 2116262531 is about 1283.8762968254.

Adding to 2116262531 its reverse (1352626112), we get a palindrome (3468888643).

The spelling of 2116262531 in words is "two billion, one hundred sixteen million, two hundred sixty-two thousand, five hundred thirty-one".