1331386105 has 12 divisors (see below), whose sum is σ = 1858506660. Its totient is φ = 912950304.

The previous prime is 1331386087. The next prime is 1331386123. The reversal of 1331386105 is 5016831331.

It is an interprime number because it is at equal distance from previous prime (1331386087) and next prime (1331386123).

It can be written as a sum of positive squares in 2 ways, for example, as 1030987881 + 300398224 = 32109^2 + 17332^2 .

It is not a de Polignac number, because 1331386105 - 2⁹ = 1331385593 is a prime.

It is a zygodrome in base 7.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2716870 + ... + 2717359.

It is an arithmetic number, because the mean of its divisors is an integer number (154875555).

Almost surely, 2^1331386105 is an apocalyptic number.

It is an amenable number.

1331386105 is a deficient number, since it is larger than the sum of its proper divisors (527120555).

1331386105 is an equidigital number, since it uses as much as digits as its factorization.

1331386105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5434248 (or 5434241 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 1331386105 is about 36488.1639028329. The cubic root of 1331386105 is about 1100.1063547304.

The spelling of 1331386105 in words is "one billion, three hundred thirty-one million, three hundred eighty-six thousand, one hundred five".