2140402312 has 16 divisors (see below), whose sum is σ = 4024019340. Its totient is φ = 1067330496.

The previous prime is 2140402283. The next prime is 2140402321. The reversal of 2140402312 is 2132040412.

It can be written as a sum of positive squares in 2 ways, for example, as 1949575716 + 190826596 = 44154^2 + 13814^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2140402312.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 355663 + ... + 361630.

Almost surely, 2^2140402312 is an apocalyptic number.

It is an amenable number.

2140402312 is a deficient number, since it is larger than the sum of its proper divisors (1883617028).

2140402312 is a wasteful number, since it uses less digits than its factorization.

2140402312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717672 (or 717668 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 2140402312 is about 46264.4821866624. The cubic root of 2140402312 is about 1288.7394918242.

Adding to 2140402312 its reverse (2132040412), we get a palindrome (4272442724).

The spelling of 2140402312 in words is "two billion, one hundred forty million, four hundred two thousand, three hundred twelve".