131000123 has 8 divisors (see below), whose sum is σ = 133387296. Its totient is φ = 128620800.

The previous prime is 131000087. The next prime is 131000161. The reversal of 131000123 is 321000131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131000123 - 2⁸ = 130999867 is a prime.

It is a super-2 number, since 2×131000123² = 34322064452030258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131000423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39458 + ... + 42648.

It is an arithmetic number, because the mean of its divisors is an integer number (16673412).

Almost surely, 2^131000123 is an apocalyptic number.

131000123 is a deficient number, since it is larger than the sum of its proper divisors (2387173).

131000123 is an equidigital number, since it uses as much as digits as its factorization.

131000123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3925.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 131000123 is about 11445.5285155383. The cubic root of 131000123 is about 507.8754667666.

Adding to 131000123 its reverse (321000131), we get a palindrome (452000254).

The spelling of 131000123 in words is "one hundred thirty-one million, one hundred twenty-three", and thus it is an aban number.