350370021 has 4 divisors (see below), whose sum is σ = 467160032. Its totient is φ = 233580012.

The previous prime is 350370011. The next prime is 350370037. The reversal of 350370021 is 120073053.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 120073053 = 3 ⋅40024351.

It is not a de Polignac number, because 350370021 - 2⁵ = 350369989 is a prime.

It is a super-3 number, since 3×350370021³ (a number of 27 digits) contains 333 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 350370021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (350370011) 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, 58395001 + ... + 58395006.

It is an arithmetic number, because the mean of its divisors is an integer number (116790008).

Almost surely, 2^350370021 is an apocalyptic number.

It is an amenable number.

350370021 is a deficient number, since it is larger than the sum of its proper divisors (116790011).

350370021 is a wasteful number, since it uses less digits than its factorization.

350370021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116790010.

The product of its (nonzero) digits is 630, while the sum is 21.

The square root of 350370021 is about 18718.1735487200. The cubic root of 350370021 is about 704.9781332185.

The spelling of 350370021 in words is "three hundred fifty million, three hundred seventy thousand, twenty-one".