20131034387 has 2 divisors, whose sum is σ = 20131034388. Its totient is φ = 20131034386.

The previous prime is 20131034323. The next prime is 20131034461. The reversal of 20131034387 is 78343013102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20131034387 - 2⁶ = 20131034323 is a prime.

It is not a weakly prime, because it can be changed into another prime (20131034087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10065517193 + 10065517194.

It is an arithmetic number, because the mean of its divisors is an integer number (10065517194).

Almost surely, 2^20131034387 is an apocalyptic number.

20131034387 is a deficient number, since it is larger than the sum of its proper divisors (1).

20131034387 is an equidigital number, since it uses as much as digits as its factorization.

20131034387 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 32.

Adding to 20131034387 its reverse (78343013102), we get a palindrome (98474047489).

The spelling of 20131034387 in words is "twenty billion, one hundred thirty-one million, thirty-four thousand, three hundred eighty-seven".