30131123 has 16 divisors (see below), whose sum is σ = 35406720. Its totient is φ = 25334400.

The previous prime is 30131113. The next prime is 30131137. The reversal of 30131123 is 32113103.

It is a cyclic number.

It is not a de Polignac number, because 30131123 - 2⁴ = 30131107 is a prime.

It is a super-2 number, since 2×30131123² = 1815769146482258, 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 = 30131098 and 30131107.

It is not an unprimeable number, because it can be changed into a prime (30131113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9668 + ... + 12398.

It is an arithmetic number, because the mean of its divisors is an integer number (2212920).

Almost surely, 2^30131123 is an apocalyptic number.

30131123 is a deficient number, since it is larger than the sum of its proper divisors (5275597).

30131123 is a wasteful number, since it uses less digits than its factorization.

30131123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2818.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 30131123 is about 5489.1823617001. The cubic root of 30131123 is about 311.1752922529.

Adding to 30131123 its reverse (32113103), we get a palindrome (62244226).

The spelling of 30131123 in words is "thirty million, one hundred thirty-one thousand, one hundred twenty-three".