352421131 has 4 divisors (see below), whose sum is σ = 353186064. Its totient is φ = 351656200.

The previous prime is 352421099. The next prime is 352421171. The reversal of 352421131 is 131124253.

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 352421131 - 2⁵ = 352421099 is a prime.

It is a super-2 number, since 2×352421131² = 248401307150638322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (352421171) 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, 381775 + ... + 382696.

It is an arithmetic number, because the mean of its divisors is an integer number (88296516).

Almost surely, 2^352421131 is an apocalyptic number.

352421131 is a deficient number, since it is larger than the sum of its proper divisors (764933).

352421131 is an equidigital number, since it uses as much as digits as its factorization.

352421131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764932.

The product of its digits is 720, while the sum is 22.

The square root of 352421131 is about 18772.8828633218. The cubic root of 352421131 is about 706.3511342261.

Adding to 352421131 its reverse (131124253), we get a palindrome (483545384).

The spelling of 352421131 in words is "three hundred fifty-two million, four hundred twenty-one thousand, one hundred thirty-one".