1391103328 has 24 divisors (see below), whose sum is σ = 2743047720. Its totient is φ = 694456320.

The previous prime is 1391103293. The next prime is 1391103341. The reversal of 1391103328 is 8233011931.

It is a self number, because there is not a number n which added to its sum of digits gives 1391103328.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13398 + ... + 54421.

It is an arithmetic number, because the mean of its divisors is an integer number (114293655).

Almost surely, 2^1391103328 is an apocalyptic number.

It is an amenable number.

1391103328 is a deficient number, since it is larger than the sum of its proper divisors (1351944392).

1391103328 is an equidigital number, since it uses as much as digits as its factorization.

1391103328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68470 (or 68462 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 1391103328 is about 37297.4976104296. The cubic root of 1391103328 is about 1116.3142360103.

The spelling of 1391103328 in words is "one billion, three hundred ninety-one million, one hundred three thousand, three hundred twenty-eight".