31742464020 has 48 divisors (see below), whose sum is σ = 89267055360. Its totient is φ = 8427689856.

The previous prime is 31742463959. The next prime is 31742464027. The reversal of 31742464020 is 2046424713.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31742464027) 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 15 ways as a sum of consecutive naturals, for example, 1141372 + ... + 1168851.

It is an arithmetic number, because the mean of its divisors is an integer number (1859730320).

Almost surely, 2^31742464020 is an apocalyptic number.

31742464020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31742464020 is an abundant number, since it is smaller than the sum of its proper divisors (57524591340).

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

31742464020 is a wasteful number, since it uses less digits than its factorization.

31742464020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2310464 (or 2310462 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 33.

Adding to 31742464020 its reverse (2046424713), we get a palindrome (33788888733).

The spelling of 31742464020 in words is "thirty-one billion, seven hundred forty-two million, four hundred sixty-four thousand, twenty".