391133333012 has 6 divisors (see below), whose sum is σ = 684483332778. Its totient is φ = 195566666504.

The previous prime is 391133332979. The next prime is 391133333029. The reversal of 391133333012 is 210333331193.

It can be written as a sum of positive squares in only one way, i.e., 215977690756 + 175155642256 = 464734^2 + 418516^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 391133333012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48891666623 + ... + 48891666630.

It is an arithmetic number, because the mean of its divisors is an integer number (114080555463).

Almost surely, 2^391133333012 is an apocalyptic number.

It is an amenable number.

391133333012 is a deficient number, since it is larger than the sum of its proper divisors (293349999766).

391133333012 is a wasteful number, since it uses less digits than its factorization.

391133333012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97783333257 (or 97783333255 counting only the distinct ones).

The product of its (nonzero) digits is 13122, while the sum is 32.

The spelling of 391133333012 in words is "three hundred ninety-one billion, one hundred thirty-three million, three hundred thirty-three thousand, twelve".