1031130202981 has 2 divisors, whose sum is σ = 1031130202982. Its totient is φ = 1031130202980.

The previous prime is 1031130202979. The next prime is 1031130203023. The reversal of 1031130202981 is 1892020311301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 847403097025 + 183727105956 = 920545^2 + 428634^2 .

It is a cyclic number.

It is not a de Polignac number, because 1031130202981 - 2¹ = 1031130202979 is a prime.

It is a super-2 number, since 2×1031130202981² (a number of 25 digits) contains 22 as substring.

Together with 1031130202979, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1031130200981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515565101490 + 515565101491.

It is an arithmetic number, because the mean of its divisors is an integer number (515565101491).

Almost surely, 2^{1031130202981} is an apocalyptic number.

It is an amenable number.

1031130202981 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031130202981 is an equidigital number, since it uses as much as digits as its factorization.

1031130202981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 31.

The spelling of 1031130202981 in words is "one trillion, thirty-one billion, one hundred thirty million, two hundred two thousand, nine hundred eighty-one".