311401842257 has 8 divisors (see below), whose sum is σ = 343074578112. Its totient is φ = 280289686000.

The previous prime is 311401842239. The next prime is 311401842299. The reversal of 311401842257 is 752248104113.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 311401842257 - 2⁸ = 311401842001 is a prime.

It is a super-2 number, since 2×311401842257² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 311401842257.

It is not an unprimeable number, because it can be changed into a prime (311401842757) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140143733 + ... + 140145954.

It is an arithmetic number, because the mean of its divisors is an integer number (42884322264).

Almost surely, 2^311401842257 is an apocalyptic number.

It is an amenable number.

311401842257 is a deficient number, since it is larger than the sum of its proper divisors (31672735855).

311401842257 is a wasteful number, since it uses less digits than its factorization.

311401842257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280289799.

The product of its (nonzero) digits is 53760, while the sum is 38.

The spelling of 311401842257 in words is "three hundred eleven billion, four hundred one million, eight hundred forty-two thousand, two hundred fifty-seven".