31554450000 has 180 divisors, whose sum is σ = 110380302396. Its totient is φ = 8414400000.

The previous prime is 31554449999. The next prime is 31554450041. The reversal of 31554450000 is 5445513.

31554450000 is a `hidden beast` number, since 3 + 155 + 4 + 4 + 500 + 0 + 0 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 30602604096 + 951845904 = 174936^2 + 30852^2 .

It is a tau number, because it is divible by the number of its divisors (180).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 414940 + ... + 485060.

Almost surely, 2^31554450000 is an apocalyptic number.

31554450000 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31554450000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55190151198).

31554450000 is an abundant number, since it is smaller than the sum of its proper divisors (78825852396).

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

31554450000 is an equidigital number, since it uses as much as digits as its factorization.

31554450000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70160 (or 70131 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

Adding to 31554450000 its reverse (5445513), we get a palindrome (31559895513).

The spelling of 31554450000 in words is "thirty-one billion, five hundred fifty-four million, four hundred fifty thousand".