311693642 has 8 divisors (see below), whose sum is σ = 503505156. Its totient is φ = 143858592.

The previous prime is 311693639. The next prime is 311693647. The reversal of 311693642 is 246396113.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 253796761 + 57896881 = 15931^2 + 7609^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (311693647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5994083 + ... + 5994134.

Almost surely, 2^311693642 is an apocalyptic number.

311693642 is a deficient number, since it is larger than the sum of its proper divisors (191811514).

311693642 is a wasteful number, since it uses less digits than its factorization.

311693642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11988232.

The product of its digits is 23328, while the sum is 35.

The square root of 311693642 is about 17654.8475496108. The cubic root of 311693642 is about 678.0202234347.

The spelling of 311693642 in words is "three hundred eleven million, six hundred ninety-three thousand, six hundred forty-two".