1232623372781 has 2 divisors, whose sum is σ = 1232623372782. Its totient is φ = 1232623372780.

The previous prime is 1232623372769. The next prime is 1232623372793. The reversal of 1232623372781 is 1872733262321.

It is a balanced prime because it is at equal distance from previous prime (1232623372769) and next prime (1232623372793).

It can be written as a sum of positive squares in only one way, i.e., 1141243524100 + 91379848681 = 1068290^2 + 302291^2 .

It is a cyclic number.

It is not a de Polignac number, because 1232623372781 - 2³⁴ = 1215443503597 is a prime.

It is a super-2 number, since 2×1232623372781² (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 (1232623377781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 616311686390 + 616311686391.

It is an arithmetic number, because the mean of its divisors is an integer number (616311686391).

Almost surely, 2^{1232623372781} is an apocalyptic number.

It is an amenable number.

1232623372781 is a deficient number, since it is larger than the sum of its proper divisors (1).

1232623372781 is an equidigital number, since it uses as much as digits as its factorization.

1232623372781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1016064, while the sum is 47.

The spelling of 1232623372781 in words is "one trillion, two hundred thirty-two billion, six hundred twenty-three million, three hundred seventy-two thousand, seven hundred eighty-one".