229891031 has 8 divisors (see below), whose sum is σ = 231668640. Its totient is φ = 228118528.

The previous prime is 229891021. The next prime is 229891043. The reversal of 229891031 is 130198922.

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 229891031 - 2¹⁰ = 229890007 is a prime.

It is a super-2 number, since 2×229891031² = 105699772268485922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 229890982 and 229891000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229891021) 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, 162455 + ... + 163863.

It is an arithmetic number, because the mean of its divisors is an integer number (28958580).

Almost surely, 2^229891031 is an apocalyptic number.

229891031 is a deficient number, since it is larger than the sum of its proper divisors (1777609).

229891031 is a wasteful number, since it uses less digits than its factorization.

229891031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2553.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 229891031 is about 15162.1578609379. The cubic root of 229891031 is about 612.5957920982.

The spelling of 229891031 in words is "two hundred twenty-nine million, eight hundred ninety-one thousand, thirty-one".