31316000066 has 16 divisors (see below), whose sum is σ = 50600457600. Its totient is φ = 14449803408.

The previous prime is 31316000057. The next prime is 31316000087. The reversal of 31316000066 is 66000061313.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a junction number, because it is equal to n+sod(n) for n = 31315999999 and 31316000044.

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, 51776 + ... + 255563.

It is an arithmetic number, because the mean of its divisors is an integer number (3162528600).

Almost surely, 2^31316000066 is an apocalyptic number.

31316000066 is a deficient number, since it is larger than the sum of its proper divisors (19284457534).

31316000066 is a wasteful number, since it uses less digits than its factorization.

31316000066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311273.

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 31316000066 its reverse (66000061313), we get a palindrome (97316061379).

The spelling of 31316000066 in words is "thirty-one billion, three hundred sixteen million, sixty-six", and thus it is an aban number.