31020022211311 has 8 divisors (see below), whose sum is σ = 35467301740320. Its totient is φ = 26576704628448.

The previous prime is 31020022211291. The next prime is 31020022211329. The reversal of 31020022211311 is 11311222002013.

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 31020022211311 - 2¹⁷ = 31020022080239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31020022211341) 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, 990469756 + ... + 990501073.

It is an arithmetic number, because the mean of its divisors is an integer number (4433412717540).

Almost surely, 2^{31020022211311} is an apocalyptic number.

31020022211311 is a deficient number, since it is larger than the sum of its proper divisors (4447279529009).

31020022211311 is a wasteful number, since it uses less digits than its factorization.

31020022211311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1980973073.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 31020022211311 its reverse (11311222002013), we get a palindrome (42331244213324).

The spelling of 31020022211311 in words is "thirty-one trillion, twenty billion, twenty-two million, two hundred eleven thousand, three hundred eleven".