31743439168 has 28 divisors (see below), whose sum is σ = 71989586272. Its totient is φ = 13604330880.

The previous prime is 31743439163. The next prime is 31743439223. The reversal of 31743439168 is 86193434713.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31743439163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35427498 + ... + 35428393.

Almost surely, 2^31743439168 is an apocalyptic number.

It is an amenable number.

31743439168 is an abundant number, since it is smaller than the sum of its proper divisors (40246147104).

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

31743439168 is an equidigital number, since it uses as much as digits as its factorization.

31743439168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70855910 (or 70855900 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 49.

The spelling of 31743439168 in words is "thirty-one billion, seven hundred forty-three million, four hundred thirty-nine thousand, one hundred sixty-eight".