312149305450 has 48 divisors (see below), whose sum is σ = 614816642520. Its totient is φ = 117502392320.

The previous prime is 312149305427. The next prime is 312149305453. The reversal of 312149305450 is 54503941213.

It can be written as a sum of positive squares in 12 ways, for example, as 27572934601 + 284576370849 = 166051^2 + 533457^2 .

It is not an unprimeable number, because it can be changed into a prime (312149305453) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 12711384 + ... + 12735916.

Almost surely, 2^312149305450 is an apocalyptic number.

312149305450 is a deficient number, since it is larger than the sum of its proper divisors (302667337070).

312149305450 is a wasteful number, since it uses less digits than its factorization.

312149305450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39531 (or 39526 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 37.

The spelling of 312149305450 in words is "three hundred twelve billion, one hundred forty-nine million, three hundred five thousand, four hundred fifty".