678054131 has 2 divisors, whose sum is σ = 678054132. Its totient is φ = 678054130.

The previous prime is 678054079. The next prime is 678054199. The reversal of 678054131 is 131450876.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 678054131 - 2⁶ = 678054067 is a prime.

It is a super-2 number, since 2×678054131² = 919514809132330322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 678054091 and 678054100.

It is not a weakly prime, because it can be changed into another prime (678054031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339027065 + 339027066.

It is an arithmetic number, because the mean of its divisors is an integer number (339027066).

Almost surely, 2^678054131 is an apocalyptic number.

678054131 is a deficient number, since it is larger than the sum of its proper divisors (1).

678054131 is an equidigital number, since it uses as much as digits as its factorization.

678054131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 678054131 is about 26039.4725561022. The cubic root of 678054131 is about 878.5263434091.

The spelling of 678054131 in words is "six hundred seventy-eight million, fifty-four thousand, one hundred thirty-one".