2011523454931 has 2 divisors, whose sum is σ = 2011523454932. Its totient is φ = 2011523454930.

The previous prime is 2011523454917. The next prime is 2011523455027. The reversal of 2011523454931 is 1394543251102.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2011523454931 - 2¹³ = 2011523446739 is a prime.

It is a super-2 number, since 2×2011523454931² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2611523454931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005761727465 + 1005761727466.

It is an arithmetic number, because the mean of its divisors is an integer number (1005761727466).

Almost surely, 2^{2011523454931} is an apocalyptic number.

2011523454931 is a deficient number, since it is larger than the sum of its proper divisors (1).

2011523454931 is an equidigital number, since it uses as much as digits as its factorization.

2011523454931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129600, while the sum is 40.

The spelling of 2011523454931 in words is "two trillion, eleven billion, five hundred twenty-three million, four hundred fifty-four thousand, nine hundred thirty-one".