1022131238 has 4 divisors (see below), whose sum is σ = 1533196860. Its totient is φ = 511065618.

The previous prime is 1022131237. The next prime is 1022131249. The reversal of 1022131238 is 8321312201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022131237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255532808 + ... + 255532811.

It is an arithmetic number, because the mean of its divisors is an integer number (383299215).

Almost surely, 2^1022131238 is an apocalyptic number.

1022131238 is a deficient number, since it is larger than the sum of its proper divisors (511065622).

1022131238 is an equidigital number, since it uses as much as digits as its factorization.

1022131238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511065621.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 1022131238 is about 31970.7872596219. The cubic root of 1022131238 is about 1007.3233174362.

Adding to 1022131238 its reverse (8321312201), we get a palindrome (9343443439).

The spelling of 1022131238 in words is "one billion, twenty-two million, one hundred thirty-one thousand, two hundred thirty-eight".