1023291 has 12 divisors (see below), whose sum is σ = 1501032. Its totient is φ = 671616.

The previous prime is 1023289. The next prime is 1023299. The reversal of 1023291 is 1923201.

It is a happy number.

It is not a de Polignac number, because 1023291 - 2¹ = 1023289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1023299) 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, 246 + ... + 1451.

It is an arithmetic number, because the mean of its divisors is an integer number (125086).

2^1023291 is an apocalyptic number.

1023291 is a deficient number, since it is larger than the sum of its proper divisors (477741).

1023291 is a wasteful number, since it uses less digits than its factorization.

1023291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1770 (or 1767 counting only the distinct ones).

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

The square root of 1023291 is about 1011.5784695218. The cubic root of 1023291 is about 100.7704160158.

Adding to 1023291 its reverse (1923201), we get a palindrome (2946492).

The spelling of 1023291 in words is "one million, twenty-three thousand, two hundred ninety-one".