31200006655 has 8 divisors (see below), whose sum is σ = 37442272032. Its totient is φ = 24958495968.

The previous prime is 31200006583. The next prime is 31200006689. The reversal of 31200006655 is 55660000213.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31200006655 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93339 + ... + 266668.

It is an arithmetic number, because the mean of its divisors is an integer number (4680284004).

Almost surely, 2^31200006655 is an apocalyptic number.

31200006655 is a deficient number, since it is larger than the sum of its proper divisors (6242265377).

31200006655 is a wasteful number, since it uses less digits than its factorization.

31200006655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377345.

The product of its (nonzero) digits is 5400, while the sum is 28.

Adding to 31200006655 its reverse (55660000213), we get a palindrome (86860006868).

The spelling of 31200006655 in words is "thirty-one billion, two hundred million, six thousand, six hundred fifty-five".