4931561123 has 16 divisors (see below), whose sum is σ = 5194022400. Its totient is φ = 4673254080.

The previous prime is 4931561083. The next prime is 4931561149. The reversal of 4931561123 is 3211651394.

4931561123 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 4931561123 - 2¹⁸ = 4931298979 is a prime.

It is a super-2 number, since 2×4931561123² = 48640590219770042258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4931561023) 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, 1817738 + ... + 1820448.

It is an arithmetic number, because the mean of its divisors is an integer number (324626400).

Almost surely, 2^4931561123 is an apocalyptic number.

4931561123 is a deficient number, since it is larger than the sum of its proper divisors (262461277).

4931561123 is a wasteful number, since it uses less digits than its factorization.

4931561123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3442.

The product of its digits is 19440, while the sum is 35.

The square root of 4931561123 is about 70225.0747454212. The cubic root of 4931561123 is about 1702.1381542718.

The spelling of 4931561123 in words is "four billion, nine hundred thirty-one million, five hundred sixty-one thousand, one hundred twenty-three".