103390155 has 32 divisors (see below), whose sum is σ = 200517120. Its totient is φ = 50127840.

The previous prime is 103390109. The next prime is 103390171. The reversal of 103390155 is 551093301.

It is not a de Polignac number, because 103390155 - 2¹⁴ = 103373771 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33327 + ... + 36296.

It is an arithmetic number, because the mean of its divisors is an integer number (6266160).

Almost surely, 2^103390155 is an apocalyptic number.

103390155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

103390155 is a deficient number, since it is larger than the sum of its proper divisors (97126965).

103390155 is a wasteful number, since it uses less digits than its factorization.

103390155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69648 (or 69642 counting only the distinct ones).

The product of its (nonzero) digits is 2025, while the sum is 27.

The square root of 103390155 is about 10168.0949543167. The cubic root of 103390155 is about 469.3459364464.

The spelling of 103390155 in words is "one hundred three million, three hundred ninety thousand, one hundred fifty-five".