1023131213197 has 2 divisors, whose sum is σ = 1023131213198. Its totient is φ = 1023131213196.

The previous prime is 1023131213131. The next prime is 1023131213201. The reversal of 1023131213197 is 7913121313201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 968923266921 + 54207946276 = 984339^2 + 232826^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1023131213197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1023131216197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511565606598 + 511565606599.

It is an arithmetic number, because the mean of its divisors is an integer number (511565606599).

Almost surely, 2^{1023131213197} is an apocalyptic number.

It is an amenable number.

1023131213197 is a deficient number, since it is larger than the sum of its proper divisors (1).

1023131213197 is an equidigital number, since it uses as much as digits as its factorization.

1023131213197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 34.

Adding to 1023131213197 its reverse (7913121313201), we get a palindrome (8936252526398).

The spelling of 1023131213197 in words is "one trillion, twenty-three billion, one hundred thirty-one million, two hundred thirteen thousand, one hundred ninety-seven".