31415216552 has 16 divisors (see below), whose sum is σ = 59091725940. Its totient is φ = 15657422976.

The previous prime is 31415216509. The next prime is 31415216587. The reversal of 31415216552 is 25561251413.

It can be written as a sum of positive squares in 2 ways, for example, as 27134655076 + 4280561476 = 164726^2 + 65426^2 .

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

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, 6270503 + ... + 6275510.

Almost surely, 2^31415216552 is an apocalyptic number.

It is an amenable number.

31415216552 is a deficient number, since it is larger than the sum of its proper divisors (27676509388).

31415216552 is a wasteful number, since it uses less digits than its factorization.

31415216552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12546332 (or 12546328 counting only the distinct ones).

The product of its digits is 36000, while the sum is 35.

Adding to 31415216552 its reverse (25561251413), we get a palindrome (56976467965).

The spelling of 31415216552 in words is "thirty-one billion, four hundred fifteen million, two hundred sixteen thousand, five hundred fifty-two".