1311242994 has 12 divisors (see below), whose sum is σ = 2841026526. Its totient is φ = 437080992.

The previous prime is 1311242951. The next prime is 1311243019. The reversal of 1311242994 is 4992421131.

1311242994 is a `hidden beast` number, since 131 + 12 + 429 + 94 = 666.

It can be written as a sum of positive squares in only one way, i.e., 922640625 + 388602369 = 30375^2 + 19713^2 .

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 in 5 ways as a sum of consecutive naturals, for example, 36423399 + ... + 36423434.

Almost surely, 2^1311242994 is an apocalyptic number.

1311242994 is an abundant number, since it is smaller than the sum of its proper divisors (1529783532).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1311242994 is a wasteful number, since it uses less digits than its factorization.

1311242994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72846841 (or 72846838 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 1311242994 is about 36211.0893788077. The cubic root of 1311242994 is about 1094.5301443236.

The spelling of 1311242994 in words is "one billion, three hundred eleven million, two hundred forty-two thousand, nine hundred ninety-four".