20312563432 has 32 divisors (see below), whose sum is σ = 43770110400. Its totient is φ = 8656746624.

The previous prime is 20312563393. The next prime is 20312563433. The reversal of 20312563432 is 23436521302.

It is a junction number, because it is equal to n+sod(n) for n = 20312563394 and 20312563403.

It is not an unprimeable number, because it can be changed into a prime (20312563433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1003173 + ... + 1023220.

It is an arithmetic number, because the mean of its divisors is an integer number (1367815950).

Almost surely, 2^20312563432 is an apocalyptic number.

It is an amenable number.

20312563432 is an abundant number, since it is smaller than the sum of its proper divisors (23457546968).

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

20312563432 is a wasteful number, since it uses less digits than its factorization.

20312563432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2026585 (or 2026581 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 31.

The spelling of 20312563432 in words is "twenty billion, three hundred twelve million, five hundred sixty-three thousand, four hundred thirty-two".