1028131 has 4 divisors (see below), whose sum is σ = 1107232. Its totient is φ = 949032.

The previous prime is 1028129. The next prime is 1028141. The reversal of 1028131 is 1318201.

1028131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1318201 = 19 ⋅69379.

It is a cyclic number.

It is not a de Polignac number, because 1028131 - 2¹ = 1028129 is a prime.

It is a super-2 number, since 2×1028131² = 2114106706322, which contains 22 as substring.

It is a Duffinian number.

1028131 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1028101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39531 + ... + 39556.

It is an arithmetic number, because the mean of its divisors is an integer number (276808).

2^1028131 is an apocalyptic number.

1028131 is a deficient number, since it is larger than the sum of its proper divisors (79101).

1028131 is an equidigital number, since it uses as much as digits as its factorization.

1028131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79100.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 1028131 is about 1013.9679482114. The cubic root of 1028131 is about 100.9290420790.

The spelling of 1028131 in words is "one million, twenty-eight thousand, one hundred thirty-one".