1031223421 has 4 divisors (see below), whose sum is σ = 1031560992. Its totient is φ = 1030885852.

The previous prime is 1031223407. The next prime is 1031223437. The reversal of 1031223421 is 1243221301.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1031223421 - 2⁹ = 1031222909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031223121) 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, 164161 + ... + 170326.

It is an arithmetic number, because the mean of its divisors is an integer number (257890248).

Almost surely, 2^1031223421 is an apocalyptic number.

It is an amenable number.

1031223421 is a deficient number, since it is larger than the sum of its proper divisors (337571).

1031223421 is an equidigital number, since it uses as much as digits as its factorization.

1031223421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337570.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1031223421 is about 32112.6676095276. The cubic root of 1031223421 is about 1010.3013253138.

Adding to 1031223421 its reverse (1243221301), we get a palindrome (2274444722).

It can be divided in two parts, 10312 and 23421, that added together give a palindrome (33733).

The spelling of 1031223421 in words is "one billion, thirty-one million, two hundred twenty-three thousand, four hundred twenty-one".