1352212231 has 4 divisors (see below), whose sum is σ = 1380982752. Its totient is φ = 1323441712.

The previous prime is 1352212229. The next prime is 1352212241. The reversal of 1352212231 is 1322122531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1322122531 = 41 ⋅32246891.

It is a cyclic number.

It is not a de Polignac number, because 1352212231 - 2¹ = 1352212229 is a prime.

It is a super-2 number, since 2×1352212231² = 3656955835331994722, 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 (1352212241) 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, 14385190 + ... + 14385283.

It is an arithmetic number, because the mean of its divisors is an integer number (345245688).

Almost surely, 2^1352212231 is an apocalyptic number.

1352212231 is a deficient number, since it is larger than the sum of its proper divisors (28770521).

1352212231 is an equidigital number, since it uses as much as digits as its factorization.

1352212231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28770520.

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

The square root of 1352212231 is about 36772.4384695930. The cubic root of 1352212231 is about 1105.8128185551.

Adding to 1352212231 its reverse (1322122531), we get a palindrome (2674334762).

The spelling of 1352212231 in words is "one billion, three hundred fifty-two million, two hundred twelve thousand, two hundred thirty-one".