123006131 has 4 divisors (see below), whose sum is σ = 123557952. Its totient is φ = 122454312.

The previous prime is 123006119. The next prime is 123006137. The reversal of 123006131 is 131600321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 131600321 = 127 ⋅1036223.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123006131 is a prime.

It is a super-2 number, since 2×123006131² = 30261016527178322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123006137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275576 + ... + 276021.

It is an arithmetic number, because the mean of its divisors is an integer number (30889488).

Almost surely, 2^123006131 is an apocalyptic number.

123006131 is a deficient number, since it is larger than the sum of its proper divisors (551821).

123006131 is an equidigital number, since it uses as much as digits as its factorization.

123006131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551820.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 123006131 is about 11090.8129097916. The cubic root of 123006131 is about 497.3272462321.

Adding to 123006131 its reverse (131600321), we get a palindrome (254606452).

The spelling of 123006131 in words is "one hundred twenty-three million, six thousand, one hundred thirty-one".