616013131 has 4 divisors (see below), whose sum is σ = 616116592. Its totient is φ = 615909672.

The previous prime is 616013129. The next prime is 616013137. The reversal of 616013131 is 131310616.

It is a happy number.

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 616013131 - 2¹ = 616013129 is a prime.

It is a super-2 number, since 2×616013131² = 758944355128846322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (616013137) 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 3 ways as a sum of consecutive naturals, for example, 42216 + ... + 54901.

It is an arithmetic number, because the mean of its divisors is an integer number (154029148).

Almost surely, 2^616013131 is an apocalyptic number.

616013131 is a deficient number, since it is larger than the sum of its proper divisors (103461).

616013131 is an equidigital number, since it uses as much as digits as its factorization.

616013131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103460.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 616013131 is about 24819.6118221055. The cubic root of 616013131 is about 850.8702188120.

Adding to 616013131 its reverse (131310616), we get a palindrome (747323747).

It can be divided in two parts, 6160 and 13131, that added together give a palindrome (19291).

The spelling of 616013131 in words is "six hundred sixteen million, thirteen thousand, one hundred thirty-one".