20113031013487 has 2 divisors, whose sum is σ = 20113031013488. Its totient is φ = 20113031013486.

The previous prime is 20113031013433. The next prime is 20113031013533. The reversal of 20113031013487 is 78431013031102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20113031013487 - 2⁷ = 20113031013359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20113031013287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10056515506743 + 10056515506744.

It is an arithmetic number, because the mean of its divisors is an integer number (10056515506744).

Almost surely, 2^{20113031013487} is an apocalyptic number.

20113031013487 is a deficient number, since it is larger than the sum of its proper divisors (1).

20113031013487 is an equidigital number, since it uses as much as digits as its factorization.

20113031013487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 34.

Adding to 20113031013487 its reverse (78431013031102), we get a palindrome (98544044044589).

The spelling of 20113031013487 in words is "twenty trillion, one hundred thirteen billion, thirty-one million, thirteen thousand, four hundred eighty-seven".