20630131431236 has 24 divisors (see below), whose sum is σ = 36119298600000. Its totient is φ = 10310332818464.

The previous prime is 20630131431179. The next prime is 20630131431251. The reversal of 20630131431236 is 63213413103602.

It is a junction number, because it is equal to n+sod(n) for n = 20630131431196 and 20630131431205.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86961950 + ... + 87198858.

It is an arithmetic number, because the mean of its divisors is an integer number (1504970775000).

Almost surely, 2^{20630131431236} is an apocalyptic number.

It is an amenable number.

20630131431236 is a deficient number, since it is larger than the sum of its proper divisors (15489167168764).

20630131431236 is a wasteful number, since it uses less digits than its factorization.

20630131431236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246811 (or 246809 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 35.

Adding to 20630131431236 its reverse (63213413103602), we get a palindrome (83843544534838).

The spelling of 20630131431236 in words is "twenty trillion, six hundred thirty billion, one hundred thirty-one million, four hundred thirty-one thousand, two hundred thirty-six".