11506031 has 8 divisors (see below), whose sum is σ = 11695104. Its totient is φ = 11318680.

The previous prime is 11505997. The next prime is 11506087. The reversal of 11506031 is 13060511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11506031 - 2¹⁸ = 11243887 is a prime.

It is a super-2 number, since 2×11506031² = 264777498745922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11506531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20156 + ... + 20718.

It is an arithmetic number, because the mean of its divisors is an integer number (1461888).

Almost surely, 2^11506031 is an apocalyptic number.

11506031 is a deficient number, since it is larger than the sum of its proper divisors (189073).

11506031 is a wasteful number, since it uses less digits than its factorization.

11506031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861.

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 11506031 is about 3392.0540974460. The cubic root of 11506031 is about 225.7573229790.

Adding to 11506031 its reverse (13060511), we get a palindrome (24566542).

The spelling of 11506031 in words is "eleven million, five hundred six thousand, thirty-one".