103133531 has 2 divisors, whose sum is σ = 103133532. Its totient is φ = 103133530.

The previous prime is 103133521. The next prime is 103133533. The reversal of 103133531 is 135331301.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103133531 is a prime.

It is a super-2 number, since 2×103133531² = 21273050433055922, which contains 22 as substring.

Together with 103133533, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (103133533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51566765 + 51566766.

It is an arithmetic number, because the mean of its divisors is an integer number (51566766).

Almost surely, 2^103133531 is an apocalyptic number.

103133531 is a deficient number, since it is larger than the sum of its proper divisors (1).

103133531 is an equidigital number, since it uses as much as digits as its factorization.

103133531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 405, while the sum is 20.

The square root of 103133531 is about 10155.4680345122. The cubic root of 103133531 is about 468.9572946023.

Adding to 103133531 its reverse (135331301), we get a palindrome (238464832).

The spelling of 103133531 in words is "one hundred three million, one hundred thirty-three thousand, five hundred thirty-one".