10131021 has 8 divisors (see below), whose sum is σ = 15008960. Its totient is φ = 6753996.

The previous prime is 10131019. The next prime is 10131029. The reversal of 10131021 is 12013101.

10131021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10131021 - 2¹ = 10131019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10130994 and 10131012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10131029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187585 + ... + 187638.

It is an arithmetic number, because the mean of its divisors is an integer number (1876120).

Almost surely, 2^10131021 is an apocalyptic number.

It is an amenable number.

10131021 is a deficient number, since it is larger than the sum of its proper divisors (4877939).

10131021 is an equidigital number, since it uses as much as digits as its factorization.

10131021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375232 (or 375226 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 10131021 is about 3182.9264835996. The cubic root of 10131021 is about 216.3803099358.

Adding to 10131021 its reverse (12013101), we get a palindrome (22144122).

The spelling of 10131021 in words is "ten million, one hundred thirty-one thousand, twenty-one".