538722231 has 8 divisors (see below), whose sum is σ = 760549104. Its totient is φ = 338021760.

The previous prime is 538722229. The next prime is 538722259. The reversal of 538722231 is 132227835.

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

It is not a de Polignac number, because 538722231 - 2¹ = 538722229 is a prime.

It is a super-2 number, since 2×538722231² = 580443284347234722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 538722192 and 538722201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538722281) 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, 5281540 + ... + 5281641.

It is an arithmetic number, because the mean of its divisors is an integer number (95068638).

Almost surely, 2^538722231 is an apocalyptic number.

538722231 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

538722231 is a deficient number, since it is larger than the sum of its proper divisors (221826873).

538722231 is a wasteful number, since it uses less digits than its factorization.

538722231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10563201.

The product of its digits is 20160, while the sum is 33.

The square root of 538722231 is about 23210.3905826679. The cubic root of 538722231 is about 813.6824816503.

The spelling of 538722231 in words is "five hundred thirty-eight million, seven hundred twenty-two thousand, two hundred thirty-one".