311421826 has 4 divisors (see below), whose sum is σ = 467132742. Its totient is φ = 155710912.

The previous prime is 311421821. The next prime is 311421857. The reversal of 311421826 is 628124113.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 292923225 + 18498601 = 17115^2 + 4301^2 .

It is a junction number, because it is equal to n+sod(n) for n = 311421794 and 311421803.

It is not an unprimeable number, because it can be changed into a prime (311421821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77855455 + ... + 77855458.

Almost surely, 2^311421826 is an apocalyptic number.

311421826 is a deficient number, since it is larger than the sum of its proper divisors (155710916).

311421826 is a wasteful number, since it uses less digits than its factorization.

311421826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155710915.

The product of its digits is 2304, while the sum is 28.

The square root of 311421826 is about 17647.1478148737. The cubic root of 311421826 is about 677.8230743553.

Adding to 311421826 its reverse (628124113), we get a palindrome (939545939).

The spelling of 311421826 in words is "three hundred eleven million, four hundred twenty-one thousand, eight hundred twenty-six".