311100221031989 has 8 divisors (see below), whose sum is σ = 312490739034048. Its totient is φ = 309709878753600.

The previous prime is 311100221031973. The next prime is 311100221032031. The reversal of 311100221031989 is 989130122001113.

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 311100221031989 - 2⁴ = 311100221031973 is a prime.

It is a super-2 number, since 2×311100221031989² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311100221031689) 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, 40381577 + ... + 47464430.

It is an arithmetic number, because the mean of its divisors is an integer number (39061342379256).

Almost surely, 2^{311100221031989} is an apocalyptic number.

It is an amenable number.

311100221031989 is a deficient number, since it is larger than the sum of its proper divisors (1390518002059).

311100221031989 is a wasteful number, since it uses less digits than its factorization.

311100221031989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87861835.

The product of its (nonzero) digits is 23328, while the sum is 41.

The spelling of 311100221031989 in words is "three hundred eleven trillion, one hundred billion, two hundred twenty-one million, thirty-one thousand, nine hundred eighty-nine".