10402032431981 has 2 divisors, whose sum is σ = 10402032431982. Its totient is φ = 10402032431980.

The previous prime is 10402032431971. The next prime is 10402032432031. The reversal of 10402032431981 is 18913423020401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10025196055081 + 376836376900 = 3166259^2 + 613870^2 .

It is a cyclic number.

It is not a de Polignac number, because 10402032431981 - 2²⁶ = 10401965323117 is a prime.

It is a super-2 number, since 2×10402032431981² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10402032431971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5201016215990 + 5201016215991.

It is an arithmetic number, because the mean of its divisors is an integer number (5201016215991).

Almost surely, 2^{10402032431981} is an apocalyptic number.

It is an amenable number.

10402032431981 is a deficient number, since it is larger than the sum of its proper divisors (1).

10402032431981 is an equidigital number, since it uses as much as digits as its factorization.

10402032431981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 38.

The spelling of 10402032431981 in words is "ten trillion, four hundred two billion, thirty-two million, four hundred thirty-one thousand, nine hundred eighty-one".