1331323011229 has 2 divisors, whose sum is σ = 1331323011230. Its totient is φ = 1331323011228.

The previous prime is 1331323011091. The next prime is 1331323011251. The reversal of 1331323011229 is 9221103231331.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1319304932100 + 12018079129 = 1148610^2 + 109627^2 .

It is a cyclic number.

It is not a de Polignac number, because 1331323011229 - 2²³ = 1331314622621 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1331323011229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1331323311229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665661505614 + 665661505615.

It is an arithmetic number, because the mean of its divisors is an integer number (665661505615).

Almost surely, 2^{1331323011229} is an apocalyptic number.

It is an amenable number.

1331323011229 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331323011229 is an equidigital number, since it uses as much as digits as its factorization.

1331323011229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 31.

The spelling of 1331323011229 in words is "one trillion, three hundred thirty-one billion, three hundred twenty-three million, eleven thousand, two hundred twenty-nine".