105231402 has 48 divisors (see below), whose sum is σ = 234524160. Its totient is φ = 34084896.

The previous prime is 105231361. The next prime is 105231403. The reversal of 105231402 is 204132501.

105231402 is a `hidden beast` number, since 1 + 0 + 523 + 140 + 2 = 666.

It is a super-2 number, since 2×105231402² = 22147295933771208, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (105231403) 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, 145999 + ... + 146717.

It is an arithmetic number, because the mean of its divisors is an integer number (4885920).

Almost surely, 2^105231402 is an apocalyptic number.

105231402 is an abundant number, since it is smaller than the sum of its proper divisors (129292758).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

105231402 is a wasteful number, since it uses less digits than its factorization.

105231402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 947 (or 944 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 105231402 is about 10258.2358132381. The cubic root of 105231402 is about 472.1157100448.

Adding to 105231402 its reverse (204132501), we get a palindrome (309363903).

The spelling of 105231402 in words is "one hundred five million, two hundred thirty-one thousand, four hundred two".