107978831 has 2 divisors, whose sum is σ = 107978832. Its totient is φ = 107978830.

The previous prime is 107978821. The next prime is 107978837. The reversal of 107978831 is 138879701.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-107978831 is a prime.

It is a super-2 number, since 2×107978831² = 23318855888253122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (107978837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53989415 + 53989416.

It is an arithmetic number, because the mean of its divisors is an integer number (53989416).

Almost surely, 2^107978831 is an apocalyptic number.

107978831 is a deficient number, since it is larger than the sum of its proper divisors (1).

107978831 is an equidigital number, since it uses as much as digits as its factorization.

107978831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84672, while the sum is 44.

The square root of 107978831 is about 10391.2863015124. The cubic root of 107978831 is about 476.1891990269.

The spelling of 107978831 in words is "one hundred seven million, nine hundred seventy-eight thousand, eight hundred thirty-one".