354140221403 has 4 divisors (see below), whose sum is σ = 356687992920. Its totient is φ = 351592449888.

The previous prime is 354140221397. The next prime is 354140221423. The reversal of 354140221403 is 304122041453.

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 354140221403 - 2¹² = 354140217307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (354140221423) 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, 1273885550 + ... + 1273885827.

It is an arithmetic number, because the mean of its divisors is an integer number (89171998230).

Almost surely, 2^354140221403 is an apocalyptic number.

354140221403 is a deficient number, since it is larger than the sum of its proper divisors (2547771517).

354140221403 is a wasteful number, since it uses less digits than its factorization.

354140221403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2547771516.

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 354140221403 its reverse (304122041453), we get a palindrome (658262262856).

The spelling of 354140221403 in words is "three hundred fifty-four billion, one hundred forty million, two hundred twenty-one thousand, four hundred three".