11678431 has 2 divisors, whose sum is σ = 11678432. Its totient is φ = 11678430.

The previous prime is 11678393. The next prime is 11678453. The reversal of 11678431 is 13487611.

It is a strong prime.

It is an emirp because it is prime and its reverse (13487611) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11678431 is a prime.

It is a super-2 number, since 2×11678431² = 272771501243522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11678393 and 11678402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11678531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5839215 + 5839216.

It is an arithmetic number, because the mean of its divisors is an integer number (5839216).

Almost surely, 2^11678431 is an apocalyptic number.

11678431 is a deficient number, since it is larger than the sum of its proper divisors (1).

11678431 is an equidigital number, since it uses as much as digits as its factorization.

11678431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 31.

The square root of 11678431 is about 3417.3719434677. The cubic root of 11678431 is about 226.8792788342.

The spelling of 11678431 in words is "eleven million, six hundred seventy-eight thousand, four hundred thirty-one".