213533531452 has 6 divisors (see below), whose sum is σ = 373683680048. Its totient is φ = 106766765724.

The previous prime is 213533531383. The next prime is 213533531509. The reversal of 213533531452 is 254135335312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26691691428 + ... + 26691691435.

Almost surely, 2^213533531452 is an apocalyptic number.

It is an amenable number.

213533531452 is a deficient number, since it is larger than the sum of its proper divisors (160150148596).

213533531452 is a wasteful number, since it uses less digits than its factorization.

213533531452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53383382867 (or 53383382865 counting only the distinct ones).

The product of its digits is 162000, while the sum is 37.

Adding to 213533531452 its reverse (254135335312), we get a palindrome (467668866764).

The spelling of 213533531452 in words is "two hundred thirteen billion, five hundred thirty-three million, five hundred thirty-one thousand, four hundred fifty-two".