31520525342 has 8 divisors (see below), whose sum is σ = 49769250600. Its totient is φ = 14930775144.

The previous prime is 31520525317. The next prime is 31520525429. The reversal of 31520525342 is 24352502513.

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 = 31520525299 and 31520525308.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 414743717 + ... + 414743792.

It is an arithmetic number, because the mean of its divisors is an integer number (6221156325).

Almost surely, 2^31520525342 is an apocalyptic number.

31520525342 is a deficient number, since it is larger than the sum of its proper divisors (18248725258).

31520525342 is a wasteful number, since it uses less digits than its factorization.

31520525342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 829487530.

The product of its (nonzero) digits is 36000, while the sum is 32.

The spelling of 31520525342 in words is "thirty-one billion, five hundred twenty million, five hundred twenty-five thousand, three hundred forty-two".