311020131022 has 4 divisors (see below), whose sum is σ = 466530196536. Its totient is φ = 155510065510.

The previous prime is 311020131013. The next prime is 311020131041. The reversal of 311020131022 is 220131020113.

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

It is a junction number, because it is equal to n+sod(n) for n = 311020130987 and 311020131005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77755032754 + ... + 77755032757.

It is an arithmetic number, because the mean of its divisors is an integer number (116632549134).

Almost surely, 2^311020131022 is an apocalyptic number.

311020131022 is a deficient number, since it is larger than the sum of its proper divisors (155510065514).

311020131022 is a wasteful number, since it uses less digits than its factorization.

311020131022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155510065513.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 311020131022 its reverse (220131020113), we get a palindrome (531151151135).

The spelling of 311020131022 in words is "three hundred eleven billion, twenty million, one hundred thirty-one thousand, twenty-two".