356240023 has 4 divisors (see below), whose sum is σ = 359698768. Its totient is φ = 352781280.

The previous prime is 356239997. The next prime is 356240039. The reversal of 356240023 is 320042653.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 356240023 - 2⁹ = 356239511 is a prime.

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 356240023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (356240323) 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 3 ways as a sum of consecutive naturals, for example, 1729218 + ... + 1729423.

It is an arithmetic number, because the mean of its divisors is an integer number (89924692).

Almost surely, 2^356240023 is an apocalyptic number.

356240023 is a deficient number, since it is larger than the sum of its proper divisors (3458745).

356240023 is a wasteful number, since it uses less digits than its factorization.

356240023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3458744.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 356240023 is about 18874.3217891399. The cubic root of 356240023 is about 708.8933517208.

Adding to 356240023 its reverse (320042653), we get a palindrome (676282676).

The spelling of 356240023 in words is "three hundred fifty-six million, two hundred forty thousand, twenty-three".