10204921031 has 4 divisors (see below), whose sum is σ = 10534112064. Its totient is φ = 9875730000.

The previous prime is 10204921021. The next prime is 10204921063. The reversal of 10204921031 is 13012940201.

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 10204921031 - 2⁶ = 10204920967 is a prime.

It is a super-2 number, since 2×10204921031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10204920988 and 10204921006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10204921021) 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, 164595470 + ... + 164595531.

It is an arithmetic number, because the mean of its divisors is an integer number (2633528016).

Almost surely, 2^10204921031 is an apocalyptic number.

10204921031 is a deficient number, since it is larger than the sum of its proper divisors (329191033).

10204921031 is an equidigital number, since it uses as much as digits as its factorization.

10204921031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329191032.

The product of its (nonzero) digits is 432, while the sum is 23.

The spelling of 10204921031 in words is "ten billion, two hundred four million, nine hundred twenty-one thousand, thirty-one".