1203191317 has 2 divisors, whose sum is σ = 1203191318. Its totient is φ = 1203191316.

The previous prime is 1203191309. The next prime is 1203191351. The reversal of 1203191317 is 7131913021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 826792516 + 376398801 = 28754^2 + 19401^2 .

It is a cyclic number.

It is not a de Polignac number, because 1203191317 - 2³ = 1203191309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1203191357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601595658 + 601595659.

It is an arithmetic number, because the mean of its divisors is an integer number (601595659).

Almost surely, 2^1203191317 is an apocalyptic number.

It is an amenable number.

1203191317 is a deficient number, since it is larger than the sum of its proper divisors (1).

1203191317 is an equidigital number, since it uses as much as digits as its factorization.

1203191317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1134, while the sum is 28.

The square root of 1203191317 is about 34687.0482601215. The cubic root of 1203191317 is about 1063.5997576546.

The spelling of 1203191317 in words is "one billion, two hundred three million, one hundred ninety-one thousand, three hundred seventeen".