2129031 has 8 divisors (see below), whose sum is σ = 3154160. Its totient is φ = 1419336.

The previous prime is 2129027. The next prime is 2129047. The reversal of 2129031 is 1309212.

It is a happy number.

It is not a de Polignac number, because 2129031 - 2² = 2129027 is a prime.

It is a super-2 number, since 2×2129031² = 9065545997922, which contains 22 as substring.

It is a Duffinian number.

2129031 is a lucky number.

It is a zygodrome in base 3.

It is a junction number, because it is equal to n+sod(n) for n = 2128995 and 2129013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2129011) 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, 39400 + ... + 39453.

It is an arithmetic number, because the mean of its divisors is an integer number (394270).

2^2129031 is an apocalyptic number.

2129031 is a deficient number, since it is larger than the sum of its proper divisors (1025129).

2129031 is an equidigital number, since it uses as much as digits as its factorization.

2129031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78862 (or 78856 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 2129031 is about 1459.1199402380. The cubic root of 2129031 is about 128.6453210165.

It can be divided in two parts, 21290 and 31, that added together give a triangular number (21321 = T₂₀₆).

The spelling of 2129031 in words is "two million, one hundred twenty-nine thousand, thirty-one".