11031947 has 2 divisors, whose sum is σ = 11031948. Its totient is φ = 11031946.

The previous prime is 11031931. The next prime is 11031961. The reversal of 11031947 is 74913011.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11031947 - 2⁴ = 11031931 is a prime.

It is a super-2 number, since 2×11031947² = 243407709221618, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11031967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5515973 + 5515974.

It is an arithmetic number, because the mean of its divisors is an integer number (5515974).

Almost surely, 2^11031947 is an apocalyptic number.

11031947 is a deficient number, since it is larger than the sum of its proper divisors (1).

11031947 is an equidigital number, since it uses as much as digits as its factorization.

11031947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 11031947 is about 3321.4374900034. The cubic root of 11031947 is about 222.6131024519.

Adding to 11031947 its reverse (74913011), we get a palindrome (85944958).

The spelling of 11031947 in words is "eleven million, thirty-one thousand, nine hundred forty-seven".