1516122231 has 16 divisors (see below), whose sum is σ = 2230095840. Its totient is φ = 910241280.

The previous prime is 1516122229. The next prime is 1516122253. The reversal of 1516122231 is 1322216151.

It is a happy number.

It is not a de Polignac number, because 1516122231 - 2¹ = 1516122229 is a prime.

It is a super-2 number, since 2×1516122231² = 4597253238664834722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1516122281) 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, 472486 + ... + 475683.

It is an arithmetic number, because the mean of its divisors is an integer number (139380990).

Almost surely, 2^1516122231 is an apocalyptic number.

1516122231 is a deficient number, since it is larger than the sum of its proper divisors (713973609).

1516122231 is a wasteful number, since it uses less digits than its factorization.

1516122231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948226.

The product of its digits is 720, while the sum is 24.

The square root of 1516122231 is about 38937.4142824097. The cubic root of 1516122231 is about 1148.8008245872.

Adding to 1516122231 its reverse (1322216151), we get a palindrome (2838338382).

The spelling of 1516122231 in words is "one billion, five hundred sixteen million, one hundred twenty-two thousand, two hundred thirty-one".