131020213013 has 2 divisors, whose sum is σ = 131020213014. Its totient is φ = 131020213012.

The previous prime is 131020212959. The next prime is 131020213039. The reversal of 131020213013 is 310312020131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88552070929 + 42468142084 = 297577^2 + 206078^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131020213013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131020212982 and 131020213000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131020215013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65510106506 + 65510106507.

It is an arithmetic number, because the mean of its divisors is an integer number (65510106507).

Almost surely, 2^131020213013 is an apocalyptic number.

It is an amenable number.

131020213013 is a deficient number, since it is larger than the sum of its proper divisors (1).

131020213013 is an equidigital number, since it uses as much as digits as its factorization.

131020213013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 131020213013 its reverse (310312020131), we get a palindrome (441332233144).

The spelling of 131020213013 in words is "one hundred thirty-one billion, twenty million, two hundred thirteen thousand, thirteen".