2216981031 has 8 divisors (see below), whose sum is σ = 2963347824. Its totient is φ = 1474300800.

The previous prime is 2216981021. The next prime is 2216981099. The reversal of 2216981031 is 1301896122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2216981031 - 2¹⁴ = 2216964647 is a prime.

It is a super-2 number, since 2×2216981031² = 9830009783627645922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2216980983 and 2216981001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2216981021) 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, 920236 + ... + 922641.

It is an arithmetic number, because the mean of its divisors is an integer number (370418478).

Almost surely, 2^2216981031 is an apocalyptic number.

2216981031 is a deficient number, since it is larger than the sum of its proper divisors (746366793).

2216981031 is a wasteful number, since it uses less digits than its factorization.

2216981031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1843281.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 2216981031 is about 47084.8280340918. The cubic root of 2216981031 is about 1303.9291442722.

The spelling of 2216981031 in words is "two billion, two hundred sixteen million, nine hundred eighty-one thousand, thirty-one".