10131331021 has 4 divisors (see below), whose sum is σ = 11578664032. Its totient is φ = 8683998012.

The previous prime is 10131330991. The next prime is 10131331027. The reversal of 10131331021 is 12013313101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10131331021 - 2¹³ = 10131322829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10131330986 and 10131331004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10131331027) 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, 723666495 + ... + 723666508.

It is an arithmetic number, because the mean of its divisors is an integer number (2894666008).

Almost surely, 2^10131331021 is an apocalyptic number.

It is an amenable number.

10131331021 is a deficient number, since it is larger than the sum of its proper divisors (1447333011).

10131331021 is an equidigital number, since it uses as much as digits as its factorization.

10131331021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1447333010.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 10131331021 its reverse (12013313101), we get a palindrome (22144644122).

The spelling of 10131331021 in words is "ten billion, one hundred thirty-one million, three hundred thirty-one thousand, twenty-one".