105131040 has 192 divisors, whose sum is σ = 384943104. Its totient is φ = 23620608.

The previous prime is 105131021. The next prime is 105131053. The reversal of 105131040 is 40131501.

It is a super-2 number, since 2×105131040² = 22105071142963200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 224887 + ... + 225353.

It is an arithmetic number, because the mean of its divisors is an integer number (2004912).

Almost surely, 2^105131040 is an apocalyptic number.

105131040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 105131040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (192471552).

105131040 is an abundant number, since it is smaller than the sum of its proper divisors (279812064).

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

105131040 is a wasteful number, since it uses less digits than its factorization.

105131040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559 (or 551 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 105131040 is about 10253.3428695231. The cubic root of 105131040 is about 471.9655725153.

Adding to 105131040 its reverse (40131501), we get a palindrome (145262541).

The spelling of 105131040 in words is "one hundred five million, one hundred thirty-one thousand, forty".