1042211231 has 4 divisors (see below), whose sum is σ = 1103517792. Its totient is φ = 980904672.

The previous prime is 1042211171. The next prime is 1042211243. The reversal of 1042211231 is 1321122401.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1042211231 is a prime.

It is a super-2 number, since 2×1042211231² = 2172408500045070722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 61306543 = 1042211231 / (1 + 0 + 4 + 2 + 2 + 1 + 1 + 2 + 3 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1042211281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30653255 + ... + 30653288.

It is an arithmetic number, because the mean of its divisors is an integer number (275879448).

Almost surely, 2^1042211231 is an apocalyptic number.

1042211231 is a deficient number, since it is larger than the sum of its proper divisors (61306561).

1042211231 is an equidigital number, since it uses as much as digits as its factorization.

1042211231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61306560.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1042211231 is about 32283.2964704660. The cubic root of 1042211231 is about 1013.8769498364.

Adding to 1042211231 its reverse (1321122401), we get a palindrome (2363333632).

The spelling of 1042211231 in words is "one billion, forty-two million, two hundred eleven thousand, two hundred thirty-one".