11231537 has 2 divisors, whose sum is σ = 11231538. Its totient is φ = 11231536.

The previous prime is 11231513. The next prime is 11231629. The reversal of 11231537 is 73513211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6105841 + 5125696 = 2471^2 + 2264^2 .

It is an emirp because it is prime and its reverse (73513211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11231537 - 2¹² = 11227441 is a prime.

It is a super-2 number, since 2×11231537² = 252294846764738, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11231837) 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, 5615768 + 5615769.

It is an arithmetic number, because the mean of its divisors is an integer number (5615769).

Almost surely, 2^11231537 is an apocalyptic number.

It is an amenable number.

11231537 is a deficient number, since it is larger than the sum of its proper divisors (1).

11231537 is an equidigital number, since it uses as much as digits as its factorization.

11231537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 630, while the sum is 23.

The square root of 11231537 is about 3351.3485345455. The cubic root of 11231537 is about 223.9475921718.

Adding to 11231537 its reverse (73513211), we get a palindrome (84744748).

The spelling of 11231537 in words is "eleven million, two hundred thirty-one thousand, five hundred thirty-seven".