31143230555 has 8 divisors (see below), whose sum is σ = 37492045344. Its totient is φ = 24834472000.

The previous prime is 31143230527. The next prime is 31143230557. The reversal of 31143230555 is 55503234113.

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

It is not a de Polignac number, because 31143230555 - 2¹² = 31143226459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31143230557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10012346 + ... + 10015455.

It is an arithmetic number, because the mean of its divisors is an integer number (4686505668).

Almost surely, 2^31143230555 is an apocalyptic number.

31143230555 is a deficient number, since it is larger than the sum of its proper divisors (6348814789).

31143230555 is a wasteful number, since it uses less digits than its factorization.

31143230555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20028117.

The product of its (nonzero) digits is 27000, while the sum is 32.

Adding to 31143230555 its reverse (55503234113), we get a palindrome (86646464668).

The spelling of 31143230555 in words is "thirty-one billion, one hundred forty-three million, two hundred thirty thousand, five hundred fifty-five".