353540231 has 4 divisors (see below), whose sum is σ = 385680264. Its totient is φ = 321400200.

The previous prime is 353540221. The next prime is 353540233. The reversal of 353540231 is 132045353.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 353540231 - 2²⁶ = 286431367 is a prime.

It is a super-2 number, since 2×353540231² = 249981389871066722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 353540231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (353540233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16070000 + ... + 16070021.

It is an arithmetic number, because the mean of its divisors is an integer number (96420066).

Almost surely, 2^353540231 is an apocalyptic number.

353540231 is a deficient number, since it is larger than the sum of its proper divisors (32140033).

353540231 is a wasteful number, since it uses less digits than its factorization.

353540231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32140032.

The product of its (nonzero) digits is 5400, while the sum is 26.

The square root of 353540231 is about 18802.6655291211. The cubic root of 353540231 is about 707.0980080155.

Adding to 353540231 its reverse (132045353), we get a palindrome (485585584).

The spelling of 353540231 in words is "three hundred fifty-three million, five hundred forty thousand, two hundred thirty-one".