12478831 has 8 divisors (see below), whose sum is σ = 12773984. Its totient is φ = 12186720.

The previous prime is 12478819. The next prime is 12478849. The reversal of 12478831 is 13887421.

12478831 = T₂₇₄ + T₂₇₅ + ... + T₄₅₆.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 12478831 - 2¹⁷ = 12347759 is a prime.

It is a super-2 number, since 2×12478831² = 311442446253122, 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 (12478891) 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, 8926 + ... + 10228.

It is an arithmetic number, because the mean of its divisors is an integer number (1596748).

Almost surely, 2^12478831 is an apocalyptic number.

12478831 is a deficient number, since it is larger than the sum of its proper divisors (295153).

12478831 is a wasteful number, since it uses less digits than its factorization.

12478831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1521.

The product of its digits is 10752, while the sum is 34.

The square root of 12478831 is about 3532.5388886748. The cubic root of 12478831 is about 231.9483572627.

The spelling of 12478831 in words is "twelve million, four hundred seventy-eight thousand, eight hundred thirty-one".