103156993 has 2 divisors, whose sum is σ = 103156994. Its totient is φ = 103156992.

The previous prime is 103156987. The next prime is 103157011. The reversal of 103156993 is 399651301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60031504 + 43125489 = 7748^2 + 6567^2 .

It is a cyclic number.

It is not a de Polignac number, because 103156993 - 2¹⁷ = 103025921 is a prime.

It is not a weakly prime, because it can be changed into another prime (103156913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51578496 + 51578497.

It is an arithmetic number, because the mean of its divisors is an integer number (51578497).

Almost surely, 2^103156993 is an apocalyptic number.

It is an amenable number.

103156993 is a deficient number, since it is larger than the sum of its proper divisors (1).

103156993 is an equidigital number, since it uses as much as digits as its factorization.

103156993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21870, while the sum is 37.

The square root of 103156993 is about 10156.6231100696. The cubic root of 103156993 is about 468.9928531696.

The spelling of 103156993 in words is "one hundred three million, one hundred fifty-six thousand, nine hundred ninety-three".