356140823 has 4 divisors (see below), whose sum is σ = 359408280. Its totient is φ = 352873368.

The previous prime is 356140789. The next prime is 356140859. The reversal of 356140823 is 328041653.

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 356140823 - 2⁸ = 356140567 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 356140823.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (356140223) 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, 1633565 + ... + 1633782.

It is an arithmetic number, because the mean of its divisors is an integer number (89852070).

Almost surely, 2^356140823 is an apocalyptic number.

356140823 is a deficient number, since it is larger than the sum of its proper divisors (3267457).

356140823 is a wasteful number, since it uses less digits than its factorization.

356140823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3267456.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 356140823 is about 18871.6936971751. The cubic root of 356140823 is about 708.8275452005.

The spelling of 356140823 in words is "three hundred fifty-six million, one hundred forty thousand, eight hundred twenty-three".