1031222320 has 40 divisors (see below), whose sum is σ = 2405310336. Its totient is φ = 411161088.

The previous prime is 1031222299. The next prime is 1031222323. The reversal of 1031222320 is 232221301.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 1031222294 and 1031222303.

It is not an unprimeable number, because it can be changed into a prime (1031222323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4449 + ... + 45631.

Almost surely, 2^1031222320 is an apocalyptic number.

1031222320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1031222320 is an abundant number, since it is smaller than the sum of its proper divisors (1374088016).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1031222320 is a wasteful number, since it uses less digits than its factorization.

1031222320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41509 (or 41503 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1031222320 is about 32112.6504667553. The cubic root of 1031222320 is about 1010.3009657596.

Adding to 1031222320 its reverse (232221301), we get a palindrome (1263443621).

The spelling of 1031222320 in words is "one billion, thirty-one million, two hundred twenty-two thousand, three hundred twenty".