20313021032 has 8 divisors (see below), whose sum is σ = 38086914450. Its totient is φ = 10156510512.

The previous prime is 20313021031. The next prime is 20313021083. The reversal of 20313021032 is 23012031302.

It can be written as a sum of positive squares in only one way, i.e., 20111210596 + 201810436 = 141814^2 + 14206^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 20313021032.

It is not an unprimeable number, because it can be changed into a prime (20313021031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1269563807 + ... + 1269563822.

Almost surely, 2^20313021032 is an apocalyptic number.

It is an amenable number.

20313021032 is a deficient number, since it is larger than the sum of its proper divisors (17773893418).

20313021032 is a wasteful number, since it uses less digits than its factorization.

20313021032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2539127635 (or 2539127631 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 20313021032 its reverse (23012031302), we get a palindrome (43325052334).

The spelling of 20313021032 in words is "twenty billion, three hundred thirteen million, twenty-one thousand, thirty-two".