103121563 has 2 divisors, whose sum is σ = 103121564. Its totient is φ = 103121562.

The previous prime is 103121533. The next prime is 103121567. The reversal of 103121563 is 365121301.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 103121563 - 2¹⁷ = 102990491 is a prime.

It is not a weakly prime, because it can be changed into another prime (103121567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51560781 + 51560782.

It is an arithmetic number, because the mean of its divisors is an integer number (51560782).

Almost surely, 2^103121563 is an apocalyptic number.

103121563 is a deficient number, since it is larger than the sum of its proper divisors (1).

103121563 is an equidigital number, since it uses as much as digits as its factorization.

103121563 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 103121563 is about 10154.8787782031. The cubic root of 103121563 is about 468.9391540488.

Adding to 103121563 its reverse (365121301), we get a palindrome (468242864).

It can be divided in two parts, 103121 and 563, that added together give a square (103684 = 322²).

The spelling of 103121563 in words is "one hundred three million, one hundred twenty-one thousand, five hundred sixty-three".