1331011349 has 2 divisors, whose sum is σ = 1331011350. Its totient is φ = 1331011348.

The previous prime is 1331011343. The next prime is 1331011361. The reversal of 1331011349 is 9431101331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1214522500 + 116488849 = 34850^2 + 10793^2 .

It is a cyclic number.

It is not a de Polignac number, because 1331011349 - 2²⁰ = 1329962773 is a prime.

It is a super-2 number, since 2×1331011349² = 3543182422333599602, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1331011343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665505674 + 665505675.

It is an arithmetic number, because the mean of its divisors is an integer number (665505675).

Almost surely, 2^1331011349 is an apocalyptic number.

It is an amenable number.

1331011349 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331011349 is an equidigital number, since it uses as much as digits as its factorization.

1331011349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 1331011349 is about 36483.0282323165. The cubic root of 1331011349 is about 1100.0031264374.

The spelling of 1331011349 in words is "one billion, three hundred thirty-one million, eleven thousand, three hundred forty-nine".