12500031 has 8 divisors (see below), whose sum is σ = 16753840. Its totient is φ = 8289792.

The previous prime is 12500029. The next prime is 12500069. The reversal of 12500031 is 13000521.

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

It is not a de Polignac number, because 12500031 - 2¹ = 12500029 is a prime.

It is a super-2 number, since 2×12500031² = 312501550001922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12500071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10216 + ... + 11373.

It is an arithmetic number, because the mean of its divisors is an integer number (2094230).

Almost surely, 2^12500031 is an apocalyptic number.

12500031 is a deficient number, since it is larger than the sum of its proper divisors (4253809).

12500031 is a wasteful number, since it uses less digits than its factorization.

12500031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21785.

The product of its (nonzero) digits is 30, while the sum is 12.

The square root of 12500031 is about 3535.5382899921. The cubic root of 12500031 is about 232.0796335328.

Adding to 12500031 its reverse (13000521), we get a palindrome (25500552).

The spelling of 12500031 in words is "twelve million, five hundred thousand, thirty-one".