311947348838 has 8 divisors (see below), whose sum is σ = 468616301688. Its totient is φ = 155741914944.

The previous prime is 311947348837. The next prime is 311947348841. The reversal of 311947348838 is 838843749113.

It is a happy number.

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

It is a super-2 number, since 2×311947348838² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311947348837) 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, 115878056 + ... + 115880747.

It is an arithmetic number, because the mean of its divisors is an integer number (58577037711).

Almost surely, 2^311947348838 is an apocalyptic number.

311947348838 is a deficient number, since it is larger than the sum of its proper divisors (156668952850).

311947348838 is a wasteful number, since it uses less digits than its factorization.

311947348838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231759478.

The product of its digits is 13934592, while the sum is 59.

The spelling of 311947348838 in words is "three hundred eleven billion, nine hundred forty-seven million, three hundred forty-eight thousand, eight hundred thirty-eight".