311425891 has 8 divisors (see below), whose sum is σ = 357132384. Its totient is φ = 266023680.

The previous prime is 311425889. The next prime is 311425921. The reversal of 311425891 is 198524113.

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 311425891 - 2¹ = 311425889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (311425831) 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, 73870 + ... + 77971.

It is an arithmetic number, because the mean of its divisors is an integer number (44641548).

Almost surely, 2^311425891 is an apocalyptic number.

311425891 is a deficient number, since it is larger than the sum of its proper divisors (45706493).

311425891 is a wasteful number, since it uses less digits than its factorization.

311425891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152141.

The product of its digits is 8640, while the sum is 34.

The square root of 311425891 is about 17647.2629889170. The cubic root of 311425891 is about 677.8260235586.

The spelling of 311425891 in words is "three hundred eleven million, four hundred twenty-five thousand, eight hundred ninety-one".