352531213 has 4 divisors (see below), whose sum is σ = 352647360. Its totient is φ = 352415068.

The previous prime is 352531177. The next prime is 352531229. The reversal of 352531213 is 312135253.

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.

It is a cyclic number.

It is not a de Polignac number, because 352531213 - 2⁹ = 352530701 is a prime.

It is a super-2 number, since 2×352531213² = 248556512278502738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (352531253) 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, 53395 + ... + 59632.

It is an arithmetic number, because the mean of its divisors is an integer number (88161840).

Almost surely, 2^352531213 is an apocalyptic number.

It is an amenable number.

352531213 is a deficient number, since it is larger than the sum of its proper divisors (116147).

352531213 is a wasteful number, since it uses less digits than its factorization.

352531213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116146.

The product of its digits is 2700, while the sum is 25.

The square root of 352531213 is about 18775.8145762041. The cubic root of 352531213 is about 706.4246716733.

Adding to 352531213 its reverse (312135253), we get a palindrome (664666466).

The spelling of 352531213 in words is "three hundred fifty-two million, five hundred thirty-one thousand, two hundred thirteen".