20131323032 has 8 divisors (see below), whose sum is σ = 37746230700. Its totient is φ = 10065661512.

The previous prime is 20131323001. The next prime is 20131323059. The reversal of 20131323032 is 23032313102.

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

It is a junction number, because it is equal to n+sod(n) for n = 20131322995 and 20131323013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1258207682 + ... + 1258207697.

Almost surely, 2^20131323032 is an apocalyptic number.

It is an amenable number.

20131323032 is a deficient number, since it is larger than the sum of its proper divisors (17614907668).

20131323032 is a wasteful number, since it uses less digits than its factorization.

20131323032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2516415385 (or 2516415381 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 20131323032 its reverse (23032313102), we get a palindrome (43163636134).

The spelling of 20131323032 in words is "twenty billion, one hundred thirty-one million, three hundred twenty-three thousand, thirty-two".