57431331380 has 54 divisors (see below), whose sum is σ = 123713801862. Its totient is φ = 22395079040.

The previous prime is 57431331379. The next prime is 57431331403. The reversal of 57431331380 is 8313313475.

It is a happy number.

57431331380 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 3307170064 + 54124161316 = 57508^2 + 232646^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 43940687 + ... + 43941993.

Almost surely, 2^57431331380 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57431331380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61856900931).

57431331380 is an abundant number, since it is smaller than the sum of its proper divisors (66282470482).

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

57431331380 is an equidigital number, since it uses as much as digits as its factorization.

57431331380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2705 (or 1355 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 38.

The spelling of 57431331380 in words is "fifty-seven billion, four hundred thirty-one million, three hundred thirty-one thousand, three hundred eighty".