211230031330 has 64 divisors (see below), whose sum is σ = 411015749760. Its totient is φ = 77900465664.

The previous prime is 211230031301. The next prime is 211230031351. The reversal of 211230031330 is 33130032112.

It is a super-2 number, since 2×211230031330² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a junction number, because it is equal to n+sod(n) for n = 211230031298 and 211230031307.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2216422 + ... + 2309758.

It is an arithmetic number, because the mean of its divisors is an integer number (6422121090).

Almost surely, 2^211230031330 is an apocalyptic number.

211230031330 is a deficient number, since it is larger than the sum of its proper divisors (199785718430).

211230031330 is a wasteful number, since it uses less digits than its factorization.

211230031330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93683.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 211230031330 its reverse (33130032112), we get a palindrome (244360063442).

The spelling of 211230031330 in words is "two hundred eleven billion, two hundred thirty million, thirty-one thousand, three hundred thirty".