31500023540542 has 8 divisors (see below), whose sum is σ = 49736879274600. Its totient is φ = 14921063782344.

The previous prime is 31500023540537. The next prime is 31500023540593. The reversal of 31500023540542 is 24504532000513.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 31500023540498 and 31500023540507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 414473993917 + ... + 414473993992.

It is an arithmetic number, because the mean of its divisors is an integer number (6217109909325).

Almost surely, 2^{31500023540542} is an apocalyptic number.

31500023540542 is a deficient number, since it is larger than the sum of its proper divisors (18236855734058).

31500023540542 is a wasteful number, since it uses less digits than its factorization.

31500023540542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 828947987930.

The product of its (nonzero) digits is 72000, while the sum is 34.

The spelling of 31500023540542 in words is "thirty-one trillion, five hundred billion, twenty-three million, five hundred forty thousand, five hundred forty-two".