31530005423200 has 72 divisors (see below), whose sum is σ = 77678796832560. Its totient is φ = 12496295692800.

The previous prime is 31530005423177. The next prime is 31530005423281. The reversal of 31530005423200 is 232450003513.

It is a super-2 number, since 2×31530005423200² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 180704116 + ... + 180878515.

It is an arithmetic number, because the mean of its divisors is an integer number (1078872178230).

Almost surely, 2^{31530005423200} is an apocalyptic number.

It is an amenable number.

31530005423200 is an abundant number, since it is smaller than the sum of its proper divisors (46148791409360).

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

31530005423200 is a wasteful number, since it uses less digits than its factorization.

31530005423200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361582760 (or 361582747 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 28.

Adding to 31530005423200 its reverse (232450003513), we get a palindrome (31762455426713).

The spelling of 31530005423200 in words is "thirty-one trillion, five hundred thirty billion, five million, four hundred twenty-three thousand, two hundred".