1203102391 has 2 divisors, whose sum is σ = 1203102392. Its totient is φ = 1203102390.

The previous prime is 1203102367. The next prime is 1203102409. The reversal of 1203102391 is 1932013021.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1203102391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1203102311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601551195 + 601551196.

It is an arithmetic number, because the mean of its divisors is an integer number (601551196).

Almost surely, 2^1203102391 is an apocalyptic number.

1203102391 is a deficient number, since it is larger than the sum of its proper divisors (1).

1203102391 is an equidigital number, since it uses as much as digits as its factorization.

1203102391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 1203102391 is about 34685.7664035264. The cubic root of 1203102391 is about 1063.5735540074.

The spelling of 1203102391 in words is "one billion, two hundred three million, one hundred two thousand, three hundred ninety-one".