1331112247 has 2 divisors, whose sum is σ = 1331112248. Its totient is φ = 1331112246.

The previous prime is 1331112227. The next prime is 1331112253. The reversal of 1331112247 is 7422111331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1331112247 - 2¹⁵ = 1331079479 is a prime.

It is a super-2 number, since 2×1331112247² = 3543719628226778018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1331112217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665556123 + 665556124.

It is an arithmetic number, because the mean of its divisors is an integer number (665556124).

Almost surely, 2^1331112247 is an apocalyptic number.

1331112247 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331112247 is an equidigital number, since it uses as much as digits as its factorization.

1331112247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1008, while the sum is 25.

The square root of 1331112247 is about 36484.4110134726. The cubic root of 1331112247 is about 1100.0309211694.

Adding to 1331112247 its reverse (7422111331), we get a palindrome (8753223578).

The spelling of 1331112247 in words is "one billion, three hundred thirty-one million, one hundred twelve thousand, two hundred forty-seven".