123020131 has 8 divisors (see below), whose sum is σ = 135715104. Its totient is φ = 110786880.

The previous prime is 123020113. The next prime is 123020167. The reversal of 123020131 is 131020321.

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 123020131 - 2⁵ = 123020099 is a prime.

It is a super-2 number, since 2×123020131² = 30267905262514322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123020101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114871 + ... + 115936.

It is an arithmetic number, because the mean of its divisors is an integer number (16964388).

Almost surely, 2^123020131 is an apocalyptic number.

123020131 is a deficient number, since it is larger than the sum of its proper divisors (12694973).

123020131 is a wasteful number, since it uses less digits than its factorization.

123020131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230861.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 123020131 is about 11091.4440448483. Note that the first 3 decimals coincide. The cubic root of 123020131 is about 497.3461133602.

Adding to 123020131 its reverse (131020321), we get a palindrome (254040452).

The spelling of 123020131 in words is "one hundred twenty-three million, twenty thousand, one hundred thirty-one".