1057678931 has 2 divisors, whose sum is σ = 1057678932. Its totient is φ = 1057678930.

The previous prime is 1057678901. The next prime is 1057678933. The reversal of 1057678931 is 1398767501.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1057678931 - 2¹⁴ = 1057662547 is a prime.

It is a super-2 number, since 2×1057678931² = 2237369442162605522, which contains 22 as substring.

Together with 1057678933, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1057678933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 528839465 + 528839466.

It is an arithmetic number, because the mean of its divisors is an integer number (528839466).

Almost surely, 2^1057678931 is an apocalyptic number.

1057678931 is a deficient number, since it is larger than the sum of its proper divisors (1).

1057678931 is an equidigital number, since it uses as much as digits as its factorization.

1057678931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 317520, while the sum is 47.

The square root of 1057678931 is about 32521.9761238459. The cubic root of 1057678931 is about 1018.8680673329.

The spelling of 1057678931 in words is "one billion, fifty-seven million, six hundred seventy-eight thousand, nine hundred thirty-one".