12135031 has 2 divisors, whose sum is σ = 12135032.
Its totient is φ = 12135030.
The previous prime is 12135023. The next prime is 12135037. The reversal of 12135031 is 13053121.
Adding to 12135031 its reverse (13053121), we get a palindrome (25188152).
12135031 is nontrivially palindromic in base 5.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 12135031 - 23 = 12135023 is a prime.
It is a super-2 number, since 2×121350312 = 294517954741922, which contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 12134996 and 12135014.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (12135037) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6067515 + 6067516.
It is an arithmetic number, because the mean of its divisors is an integer number (6067516).
Almost surely, 212135031 is an apocalyptic number.
12135031 is a deficient number, since it is larger than the sum of its proper divisors (1).
12135031 is an equidigital number, since it uses as much as digits as its factorization.
12135031 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 90, while the sum is 16.
The square root of 12135031 is about 3483.5371391733.
The cubic root of 12135031 is about 229.7983803362.
The spelling of 12135031 in words is "twelve million, one hundred thirty-five thousand, thirty-one".