103145133 has 32 divisors (see below), whose sum is σ = 176633856. Its totient is φ = 52037568.

The previous prime is 103145123. The next prime is 103145149. The reversal of 103145133 is 331541301.

It is not a de Polignac number, because 103145133 - 2⁴ = 103145117 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103145113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1935 + ... + 14492.

It is an arithmetic number, because the mean of its divisors is an integer number (5519808).

Almost surely, 2^103145133 is an apocalyptic number.

103145133 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

103145133 is a deficient number, since it is larger than the sum of its proper divisors (73488723).

103145133 is a wasteful number, since it uses less digits than its factorization.

103145133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16473.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 103145133 is about 10156.0392378131. The cubic root of 103145133 is about 468.9748790499.

Adding to 103145133 its reverse (331541301), we get a palindrome (434686434).

It can be divided in two parts, 1031 and 45133, that added together give a palindrome (46164).

The spelling of 103145133 in words is "one hundred three million, one hundred forty-five thousand, one hundred thirty-three".