102331978 has 8 divisors (see below), whose sum is σ = 175426272. Its totient is φ = 43856556.

The previous prime is 102331949. The next prime is 102331987. The reversal of 102331978 is 879133201.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3654700 + ... + 3654727.

It is an arithmetic number, because the mean of its divisors is an integer number (21928284).

Almost surely, 2^102331978 is an apocalyptic number.

102331978 is a deficient number, since it is larger than the sum of its proper divisors (73094294).

102331978 is an equidigital number, since it uses as much as digits as its factorization.

102331978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7309436.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 102331978 is about 10115.9269471463. The cubic root of 102331978 is about 467.7392227016.

The spelling of 102331978 in words is "one hundred two million, three hundred thirty-one thousand, nine hundred seventy-eight".