12531929 has 4 divisors (see below), whose sum is σ = 12608976. Its totient is φ = 12454884.

The previous prime is 12531919. The next prime is 12531977. The reversal of 12531929 is 92913521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12531929 - 2⁴ = 12531913 is a prime.

It is a super-2 number, since 2×12531929² = 314098488922082, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12531895 and 12531904.

It is not an unprimeable number, because it can be changed into a prime (12531919) 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, 38279 + ... + 38604.

It is an arithmetic number, because the mean of its divisors is an integer number (3152244).

Almost surely, 2^12531929 is an apocalyptic number.

It is an amenable number.

12531929 is a deficient number, since it is larger than the sum of its proper divisors (77047).

12531929 is an equidigital number, since it uses as much as digits as its factorization.

12531929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77046.

The product of its digits is 4860, while the sum is 32.

The square root of 12531929 is about 3540.0464686216. The cubic root of 12531929 is about 232.2768753928.

The spelling of 12531929 in words is "twelve million, five hundred thirty-one thousand, nine hundred twenty-nine".