12881031 has 8 divisors (see below), whose sum is σ = 18078720. Its totient is φ = 8135352.

The previous prime is 12881023. The next prime is 12881041. The reversal of 12881031 is 13018821.

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

It is not a de Polignac number, because 12881031 - 2³ = 12881023 is a prime.

It is a super-2 number, since 2×12881031² = 331841919245922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12880992 and 12881010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12881041) 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, 112935 + ... + 113048.

It is an arithmetic number, because the mean of its divisors is an integer number (2259840).

Almost surely, 2^12881031 is an apocalyptic number.

12881031 is a deficient number, since it is larger than the sum of its proper divisors (5197689).

12881031 is a wasteful number, since it uses less digits than its factorization.

12881031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226005.

The product of its (nonzero) digits is 384, while the sum is 24.

The square root of 12881031 is about 3589.0153245702. The cubic root of 12881031 is about 234.4139979196.

Adding to 12881031 its reverse (13018821), we get a palindrome (25899852).

The spelling of 12881031 in words is "twelve million, eight hundred eighty-one thousand, thirty-one".