31553204144 has 80 divisors (see below), whose sum is σ = 80702977536. Its totient is φ = 11570304000.

The previous prime is 31553204131. The next prime is 31553204159. The reversal of 31553204144 is 44140235513.

It is a self number, because there is not a number n which added to its sum of digits gives 31553204144.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 732332 + ... + 774219.

Almost surely, 2^31553204144 is an apocalyptic number.

31553204144 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

31553204144 is an abundant number, since it is smaller than the sum of its proper divisors (49149773392).

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

31553204144 is a wasteful number, since it uses less digits than its factorization.

31553204144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1506594 (or 1506588 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 31553204144 its reverse (44140235513), we get a palindrome (75693439657).

The spelling of 31553204144 in words is "thirty-one billion, five hundred fifty-three million, two hundred four thousand, one hundred forty-four".