1232030231981 has 2 divisors, whose sum is σ = 1232030231982. Its totient is φ = 1232030231980.

The previous prime is 1232030231963. The next prime is 1232030232049. The reversal of 1232030231981 is 1891320302321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 796574100100 + 435456131881 = 892510^2 + 659891^2 .

It is a cyclic number.

It is not a de Polignac number, because 1232030231981 - 2³⁸ = 957152325037 is a prime.

It is a super-2 number, since 2×1232030231981² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1232030231281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 616015115990 + 616015115991.

It is an arithmetic number, because the mean of its divisors is an integer number (616015115991).

Almost surely, 2^{1232030231981} is an apocalyptic number.

It is an amenable number.

1232030231981 is a deficient number, since it is larger than the sum of its proper divisors (1).

1232030231981 is an equidigital number, since it uses as much as digits as its factorization.

1232030231981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 35.

The spelling of 1232030231981 in words is "one trillion, two hundred thirty-two billion, thirty million, two hundred thirty-one thousand, nine hundred eighty-one".