3525213231 has 20 divisors (see below), whose sum is σ = 5286580992. Its totient is φ = 2340983808.

The previous prime is 3525213217. The next prime is 3525213247. The reversal of 3525213231 is 1323125253.

It is a happy number.

3525213231 is a `hidden beast` number, since 3 + 525 + 2 + 132 + 3 + 1 = 666.

It is not a de Polignac number, because 3525213231 - 2⁵ = 3525213199 is a prime.

It is a super-2 number, since 2×3525213231² = 24854256648034918722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 3525213195 and 3525213204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3525213031) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 63855 + ... + 105488.

Almost surely, 2^3525213231 is an apocalyptic number.

3525213231 is a deficient number, since it is larger than the sum of its proper divisors (1761367761).

3525213231 is a wasteful number, since it uses less digits than its factorization.

3525213231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169612 (or 169603 counting only the distinct ones).

The product of its digits is 5400, while the sum is 27.

The square root of 3525213231 is about 59373.5061369968. The cubic root of 3525213231 is about 1521.9315862070.

Adding to 3525213231 its reverse (1323125253), we get a palindrome (4848338484).

The spelling of 3525213231 in words is "three billion, five hundred twenty-five million, two hundred thirteen thousand, two hundred thirty-one".