220156031 has 8 divisors (see below), whose sum is σ = 228223440. Its totient is φ = 212200128.

The previous prime is 220156009. The next prime is 220156033. The reversal of 220156031 is 130651022.

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 220156031 - 2¹⁰ = 220155007 is a prime.

It is a super-3 number, since 3×220156031³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220155994 and 220156012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220156033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23846 + ... + 31763.

It is an arithmetic number, because the mean of its divisors is an integer number (28527930).

Almost surely, 2^220156031 is an apocalyptic number.

220156031 is a deficient number, since it is larger than the sum of its proper divisors (8067409).

220156031 is a wasteful number, since it uses less digits than its factorization.

220156031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55753.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 220156031 is about 14837.6558458538. The cubic root of 220156031 is about 603.8237565618.

The spelling of 220156031 in words is "two hundred twenty million, one hundred fifty-six thousand, thirty-one".