1011385407931 has 2 divisors, whose sum is σ = 1011385407932. Its totient is φ = 1011385407930.

The previous prime is 1011385407881. The next prime is 1011385407953. The reversal of 1011385407931 is 1397045831101.

It is a strong prime.

It is an emirp because it is prime and its reverse (1397045831101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1011385407931 - 2¹⁹ = 1011384883643 is a prime.

It is a super-2 number, since 2×1011385407931² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1011385402931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505692703965 + 505692703966.

It is an arithmetic number, because the mean of its divisors is an integer number (505692703966).

Almost surely, 2^{1011385407931} is an apocalyptic number.

1011385407931 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011385407931 is an equidigital number, since it uses as much as digits as its factorization.

1011385407931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 43.

The spelling of 1011385407931 in words is "one trillion, eleven billion, three hundred eighty-five million, four hundred seven thousand, nine hundred thirty-one".