10921031 has 8 divisors (see below), whose sum is σ = 12236304. Its totient is φ = 9659520.

The previous prime is 10920983. The next prime is 10921033. The reversal of 10921031 is 13012901.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10921031 is a prime.

It is a super-2 number, since 2×10921031² = 238537836205922, 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 (10921033) 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 in 7 ways as a sum of consecutive naturals, for example, 13010 + ... + 13823.

It is an arithmetic number, because the mean of its divisors is an integer number (1529538).

Almost surely, 2^10921031 is an apocalyptic number.

10921031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

10921031 is a deficient number, since it is larger than the sum of its proper divisors (1315273).

10921031 is a wasteful number, since it uses less digits than its factorization.

10921031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26881.

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 10921031 is about 3304.6983220863. The cubic root of 10921031 is about 221.8645319666.

Adding to 10921031 its reverse (13012901), we get a palindrome (23933932).

The spelling of 10921031 in words is "ten million, nine hundred twenty-one thousand, thirty-one".