20403211634312 has 32 divisors (see below), whose sum is σ = 41199395428800. Its totient is φ = 9416729146944.

The previous prime is 20403211634287. The next prime is 20403211634353. The reversal of 20403211634312 is 21343611230402.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5886989 + ... + 8686947.

It is an arithmetic number, because the mean of its divisors is an integer number (1287481107150).

Almost surely, 2^{20403211634312} is an apocalyptic number.

It is an amenable number.

20403211634312 is an abundant number, since it is smaller than the sum of its proper divisors (20796183794488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20403211634312 is a wasteful number, since it uses less digits than its factorization.

20403211634312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2870045 (or 2870041 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

Adding to 20403211634312 its reverse (21343611230402), we get a palindrome (41746822864714).

The spelling of 20403211634312 in words is "twenty trillion, four hundred three billion, two hundred eleven million, six hundred thirty-four thousand, three hundred twelve".