1331112947 has 2 divisors, whose sum is σ = 1331112948. Its totient is φ = 1331112946.

The previous prime is 1331112943. The next prime is 1331113019. The reversal of 1331112947 is 7492111331.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1331112947 - 2² = 1331112943 is a prime.

It is not a weakly prime, because it can be changed into another prime (1331112943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665556473 + 665556474.

It is an arithmetic number, because the mean of its divisors is an integer number (665556474).

Almost surely, 2^1331112947 is an apocalyptic number.

1331112947 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331112947 is an equidigital number, since it uses as much as digits as its factorization.

1331112947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536, while the sum is 32.

The square root of 1331112947 is about 36484.4206066096. The cubic root of 1331112947 is about 1100.0311139960.

The spelling of 1331112947 in words is "one billion, three hundred thirty-one million, one hundred twelve thousand, nine hundred forty-seven".