10100031 has 4 divisors (see below), whose sum is σ = 13466712. Its totient is φ = 6733352.

The previous prime is 10100011. The next prime is 10100047. The reversal of 10100031 is 13000101.

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 10100031 - 2⁹ = 10099519 is a prime.

It is a super-2 number, since 2×10100031² = 204021252401922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10099992 and 10100019.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10100011) 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, 1683336 + ... + 1683341.

It is an arithmetic number, because the mean of its divisors is an integer number (3366678).

Almost surely, 2^10100031 is an apocalyptic number.

10100031 is a deficient number, since it is larger than the sum of its proper divisors (3366681).

10100031 is an equidigital number, since it uses as much as digits as its factorization.

10100031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3366680.

The product of its (nonzero) digits is 3, while the sum is 6.

The square root of 10100031 is about 3178.0545936154. The cubic root of 10100031 is about 216.1594544473.

Adding to 10100031 its reverse (13000101), we get a palindrome (23100132).

The spelling of 10100031 in words is "ten million, one hundred thousand, thirty-one".