2145514312 has 8 divisors (see below), whose sum is σ = 4022839350. Its totient is φ = 1072757152.

The previous prime is 2145514307. The next prime is 2145514351. The reversal of 2145514312 is 2134155412.

It can be written as a sum of positive squares in only one way, i.e., 1987911396 + 157602916 = 44586^2 + 12554^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 134094637 + ... + 134094652.

Almost surely, 2^2145514312 is an apocalyptic number.

It is an amenable number.

2145514312 is a deficient number, since it is larger than the sum of its proper divisors (1877325038).

2145514312 is a wasteful number, since it uses less digits than its factorization.

2145514312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268189295 (or 268189291 counting only the distinct ones).

The product of its digits is 4800, while the sum is 28.

The square root of 2145514312 is about 46319.6968038436. The cubic root of 2145514312 is about 1289.7646571056.

Adding to 2145514312 its reverse (2134155412), we get a palindrome (4279669724).

The spelling of 2145514312 in words is "two billion, one hundred forty-five million, five hundred fourteen thousand, three hundred twelve".