523862381 has 24 divisors (see below), whose sum is σ = 622829880. Its totient is φ = 439229952.

The previous prime is 523862363. The next prime is 523862401. The reversal of 523862381 is 183268325.

It can be written as a sum of positive squares in 4 ways, for example, as 100902025 + 422960356 = 10045^2 + 20566^2 .

It is a de Polignac number, because none of the positive numbers 2^k-523862381 is a prime.

It is a super-2 number, since 2×523862381² = 548863588453978322, 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 (523862341) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 489515 + ... + 490583.

It is an arithmetic number, because the mean of its divisors is an integer number (25951245).

Almost surely, 2^523862381 is an apocalyptic number.

It is an amenable number.

523862381 is a deficient number, since it is larger than the sum of its proper divisors (98967499).

523862381 is a wasteful number, since it uses less digits than its factorization.

523862381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1293 (or 1286 counting only the distinct ones).

The product of its digits is 69120, while the sum is 38.

The square root of 523862381 is about 22888.0401301641. The cubic root of 523862381 is about 806.1312136678.

The spelling of 523862381 in words is "five hundred twenty-three million, eight hundred sixty-two thousand, three hundred eighty-one".