2031012021 has 8 divisors (see below), whose sum is σ = 2709228064. Its totient is φ = 1353402000.

The previous prime is 2031012007. The next prime is 2031012031. The reversal of 2031012021 is 1202101302.

2031012021 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2031012021 - 2¹³ = 2031003829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2031011988 and 2031012006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2031012001) 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, 143626 + ... + 157131.

It is an arithmetic number, because the mean of its divisors is an integer number (338653508).

Almost surely, 2^2031012021 is an apocalyptic number.

It is an amenable number.

2031012021 is a deficient number, since it is larger than the sum of its proper divisors (678216043).

2031012021 is a wasteful number, since it uses less digits than its factorization.

2031012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303011.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 2031012021 is about 45066.7507260064. The cubic root of 2031012021 is about 1266.3997942463.

Adding to 2031012021 its reverse (1202101302), we get a palindrome (3233113323).

The spelling of 2031012021 in words is "two billion, thirty-one million, twelve thousand, twenty-one".