1131003197 has 2 divisors, whose sum is σ = 1131003198. Its totient is φ = 1131003196.

The previous prime is 1131003193. The next prime is 1131003221. The reversal of 1131003197 is 7913001311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 784336036 + 346667161 = 28006^2 + 18619^2 .

It is a cyclic number.

It is not a de Polignac number, because 1131003197 - 2² = 1131003193 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1131003193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565501598 + 565501599.

It is an arithmetic number, because the mean of its divisors is an integer number (565501599).

Almost surely, 2^1131003197 is an apocalyptic number.

It is an amenable number.

1131003197 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131003197 is an equidigital number, since it uses as much as digits as its factorization.

1131003197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 567, while the sum is 26.

The square root of 1131003197 is about 33630.3909730470. The cubic root of 1131003197 is about 1041.8885792841. Note that the first 3 decimals are identical.

The spelling of 1131003197 in words is "one billion, one hundred thirty-one million, three thousand, one hundred ninety-seven".