20131055089913 has 2 divisors, whose sum is σ = 20131055089914. Its totient is φ = 20131055089912.

The previous prime is 20131055089861. The next prime is 20131055089949. The reversal of 20131055089913 is 31998055013102.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18883517997289 + 1247537092624 = 4345517^2 + 1116932^2 .

It is a cyclic number.

It is not a de Polignac number, because 20131055089913 - 2¹⁰ = 20131055088889 is a prime.

It is a super-2 number, since 2×20131055089913² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20131055079913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10065527544956 + 10065527544957.

It is an arithmetic number, because the mean of its divisors is an integer number (10065527544957).

Almost surely, 2^{20131055089913} is an apocalyptic number.

It is an amenable number.

20131055089913 is a deficient number, since it is larger than the sum of its proper divisors (1).

20131055089913 is an equidigital number, since it uses as much as digits as its factorization.

20131055089913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 291600, while the sum is 47.

The spelling of 20131055089913 in words is "twenty trillion, one hundred thirty-one billion, fifty-five million, eighty-nine thousand, nine hundred thirteen".