1928231 has 4 divisors (see below), whose sum is σ = 1990464. Its totient is φ = 1866000.

The previous prime is 1928219. The next prime is 1928237. The reversal of 1928231 is 1328291.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1328291 = 647 ⋅2053.

It is a cyclic number.

It is not a de Polignac number, because 1928231 - 2⁶ = 1928167 is a prime.

It is a super-2 number, since 2×1928231² = 7436149578722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1928231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1928237) 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, 31070 + ... + 31131.

It is an arithmetic number, because the mean of its divisors is an integer number (497616).

2^1928231 is an apocalyptic number.

1928231 is a deficient number, since it is larger than the sum of its proper divisors (62233).

1928231 is an equidigital number, since it uses as much as digits as its factorization.

1928231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62232.

The product of its digits is 864, while the sum is 26.

The square root of 1928231 is about 1388.6075759551. The cubic root of 1928231 is about 124.4666555864.

The spelling of 1928231 in words is "one million, nine hundred twenty-eight thousand, two hundred thirty-one".