103145331 has 4 divisors (see below), whose sum is σ = 137527112. Its totient is φ = 68763552.

The previous prime is 103145311. The next prime is 103145351. The reversal of 103145331 is 133541301.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (103145311) and next prime (103145351).

It is not a de Polignac number, because 103145331 - 2⁶ = 103145267 is a prime.

It is a super-2 number, since 2×103145331² = 21277918614199122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103145298 and 103145307.

It is not an unprimeable number, because it can be changed into a prime (103145311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17190886 + ... + 17190891.

It is an arithmetic number, because the mean of its divisors is an integer number (34381778).

Almost surely, 2^103145331 is an apocalyptic number.

103145331 is a deficient number, since it is larger than the sum of its proper divisors (34381781).

103145331 is an equidigital number, since it uses as much as digits as its factorization.

103145331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34381780.

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

The square root of 103145331 is about 10156.0489857031. The cubic root of 103145331 is about 468.9751791351.

Adding to 103145331 its reverse (133541301), we get a palindrome (236686632).

The spelling of 103145331 in words is "one hundred three million, one hundred forty-five thousand, three hundred thirty-one".