2102031 has 10 divisors (see below), whose sum is σ = 3140192. Its totient is φ = 1401300.

The previous prime is 2102021. The next prime is 2102057. The reversal of 2102031 is 1302012.

It is a happy number.

It is not a de Polignac number, because 2102031 - 2⁷ = 2101903 is a prime.

It is a super-2 number, since 2×2102031² = 8837068649922, 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 (2102021) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 12895 + ... + 13056.

2^2102031 is an apocalyptic number.

2102031 is a deficient number, since it is larger than the sum of its proper divisors (1038161).

2102031 is an equidigital number, since it uses as much as digits as its factorization.

2102031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25963 (or 25954 counting only the distinct ones).

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

The square root of 2102031 is about 1449.8382668422. The cubic root of 2102031 is about 128.0991866300.

Adding to 2102031 its reverse (1302012), we get a palindrome (3404043).

The spelling of 2102031 in words is "two million, one hundred two thousand, thirty-one".