20413431312 has 20 divisors (see below), whose sum is σ = 52734697680. Its totient is φ = 6804477088.

The previous prime is 20413431287. The next prime is 20413431341. The reversal of 20413431312 is 21313431402.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212639862 + ... + 212639957.

It is an arithmetic number, because the mean of its divisors is an integer number (2636734884).

Almost surely, 2^20413431312 is an apocalyptic number.

It is an amenable number.

20413431312 is an abundant number, since it is smaller than the sum of its proper divisors (32321266368).

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

20413431312 is a wasteful number, since it uses less digits than its factorization.

20413431312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425279830 (or 425279824 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 20413431312 its reverse (21313431402), we get a palindrome (41726862714).

It can be divided in two parts, 20413 and 431312, that added together give a triangular number (451725 = T₉₅₀).

The spelling of 20413431312 in words is "twenty billion, four hundred thirteen million, four hundred thirty-one thousand, three hundred twelve".