1031451220322 has 4 divisors (see below), whose sum is σ = 1547176830486. Its totient is φ = 515725610160.

The previous prime is 1031451220321. The next prime is 1031451220337. The reversal of 1031451220322 is 2230221541301.

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

It can be written as a sum of positive squares in only one way, i.e., 799234212001 + 232217008321 = 893999^2 + 481889^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1031451220291 and 1031451220300.

It is not an unprimeable number, because it can be changed into a prime (1031451220321) 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, 257862805079 + ... + 257862805082.

Almost surely, 2^{1031451220322} is an apocalyptic number.

1031451220322 is a deficient number, since it is larger than the sum of its proper divisors (515725610164).

1031451220322 is an equidigital number, since it uses as much as digits as its factorization.

1031451220322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515725610163.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 1031451220322 its reverse (2230221541301), we get a palindrome (3261672761623).

The spelling of 1031451220322 in words is "one trillion, thirty-one billion, four hundred fifty-one million, two hundred twenty thousand, three hundred twenty-two".