231021052 has 12 divisors (see below), whose sum is σ = 417328576. Its totient is φ = 111784320.

The previous prime is 231021029. The next prime is 231021061. The reversal of 231021052 is 250120132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 931413 + ... + 931660.

Almost surely, 2^231021052 is an apocalyptic number.

It is an amenable number.

231021052 is a deficient number, since it is larger than the sum of its proper divisors (186307524).

231021052 is a wasteful number, since it uses less digits than its factorization.

231021052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1863108 (or 1863106 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 231021052 is about 15199.3766977465. The cubic root of 231021052 is about 613.5978827510.

Adding to 231021052 its reverse (250120132), we get a palindrome (481141184).

The spelling of 231021052 in words is "two hundred thirty-one million, twenty-one thousand, fifty-two".