103208531 has 2 divisors, whose sum is σ = 103208532. Its totient is φ = 103208530.

The previous prime is 103208519. The next prime is 103208549. The reversal of 103208531 is 135802301.

It is a weak prime.

It is an emirp because it is prime and its reverse (135802301) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 103208531 - 2⁶ = 103208467 is a prime.

It is a super-2 number, since 2×103208531² = 21304001742355922, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 103208497 and 103208506.

It is not a weakly prime, because it can be changed into another prime (103208431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51604265 + 51604266.

It is an arithmetic number, because the mean of its divisors is an integer number (51604266).

Almost surely, 2^103208531 is an apocalyptic number.

103208531 is a deficient number, since it is larger than the sum of its proper divisors (1).

103208531 is an equidigital number, since it uses as much as digits as its factorization.

103208531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 103208531 is about 10159.1599554294. The cubic root of 103208531 is about 469.0709442706.

The spelling of 103208531 in words is "one hundred three million, two hundred eight thousand, five hundred thirty-one".