1031232221993 has 2 divisors, whose sum is σ = 1031232221994. Its totient is φ = 1031232221992.

The previous prime is 1031232221989. The next prime is 1031232222023. The reversal of 1031232221993 is 3991222321301.

It is a happy number.

1031232221993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1030982329129 + 249892864 = 1015373^2 + 15808^2 .

It is a cyclic number.

It is not a de Polignac number, because 1031232221993 - 2² = 1031232221989 is a prime.

It is a super-3 number, since 3×1031232221993³ (a number of 37 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1031232221953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515616110996 + 515616110997.

It is an arithmetic number, because the mean of its divisors is an integer number (515616110997).

Almost surely, 2^{1031232221993} is an apocalyptic number.

It is an amenable number.

1031232221993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031232221993 is an equidigital number, since it uses as much as digits as its factorization.

1031232221993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 38.

The spelling of 1031232221993 in words is "one trillion, thirty-one billion, two hundred thirty-two million, two hundred twenty-one thousand, nine hundred ninety-three".