2021031 has 12 divisors (see below), whose sum is σ = 3027752. Its totient is φ = 1347192.

The previous prime is 2021029. The next prime is 2021053. The reversal of 2021031 is 1301202.

It is a happy number.

It is not a de Polignac number, because 2021031 - 2¹ = 2021029 is a prime.

It is a super-2 number, since 2×2021031² = 8169132605922, which contains 22 as substring.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021081) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3916 + ... + 4401.

2^2021031 is an apocalyptic number.

2021031 is a deficient number, since it is larger than the sum of its proper divisors (1006721).

2021031 is an frugal number, since it uses more digits than its factorization.

2021031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8332 (or 8320 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 2021031 is about 1421.6296986206. The cubic root of 2021031 is about 126.4321893330.

Adding to 2021031 its reverse (1301202), we get a palindrome (3322233).

The spelling of 2021031 in words is "two million, twenty-one thousand, thirty-one".