10990031 has 4 divisors (see below), whose sum is σ = 11835432. Its totient is φ = 10144632.

The previous prime is 10990013. The next prime is 10990033. The reversal of 10990031 is 13009901.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10990031 - 2⁶ = 10989967 is a prime.

It is a super-2 number, since 2×10990031² = 241561562761922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10989979 and 10990006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10990033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 422681 + ... + 422706.

It is an arithmetic number, because the mean of its divisors is an integer number (2958858).

Almost surely, 2^10990031 is an apocalyptic number.

10990031 is a deficient number, since it is larger than the sum of its proper divisors (845401).

10990031 is an equidigital number, since it uses as much as digits as its factorization.

10990031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 845400.

The product of its (nonzero) digits is 243, while the sum is 23.

The square root of 10990031 is about 3315.1215663984. The cubic root of 10990031 is about 222.3308043342.

Adding to 10990031 its reverse (13009901), we get a palindrome (23999932).

The spelling of 10990031 in words is "ten million, nine hundred ninety thousand, thirty-one".