103000101991 has 2 divisors, whose sum is σ = 103000101992. Its totient is φ = 103000101990.

The previous prime is 103000101979. The next prime is 103000102021. The reversal of 103000101991 is 199101000301.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 103000101991 - 2¹⁵ = 103000069223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103000101091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51500050995 + 51500050996.

It is an arithmetic number, because the mean of its divisors is an integer number (51500050996).

Almost surely, 2^103000101991 is an apocalyptic number.

103000101991 is a deficient number, since it is larger than the sum of its proper divisors (1).

103000101991 is an equidigital number, since it uses as much as digits as its factorization.

103000101991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 243, while the sum is 25.

The spelling of 103000101991 in words is "one hundred three billion, one hundred one thousand, nine hundred ninety-one".