311061426 has 48 divisors (see below), whose sum is σ = 707160384. Its totient is φ = 90665568.

The previous prime is 311061419. The next prime is 311061449. The reversal of 311061426 is 624160113.

It is a junction number, because it is equal to n+sod(n) for n = 311061396 and 311061405.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22635 + ... + 33681.

It is an arithmetic number, because the mean of its divisors is an integer number (14732508).

Almost surely, 2^311061426 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 311061426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (353580192).

311061426 is an abundant number, since it is smaller than the sum of its proper divisors (396098958).

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

311061426 is a wasteful number, since it uses less digits than its factorization.

311061426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11103 (or 11084 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 311061426 is about 17636.9335770139. The cubic root of 311061426 is about 677.5614980281.

The spelling of 311061426 in words is "three hundred eleven million, sixty-one thousand, four hundred twenty-six".