40101321 has 32 divisors (see below), whose sum is σ = 60963840. Its totient is φ = 23270400.

The previous prime is 40101319. The next prime is 40101323. The reversal of 40101321 is 12310104.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (40101319) and next prime (40101323).

It is not a de Polignac number, because 40101321 - 2¹ = 40101319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40101297 and 40101306.

It is not an unprimeable number, because it can be changed into a prime (40101323) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49165 + ... + 49973.

It is an arithmetic number, because the mean of its divisors is an integer number (1905120).

Almost surely, 2^40101321 is an apocalyptic number.

40101321 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

40101321 is a deficient number, since it is larger than the sum of its proper divisors (20862519).

40101321 is a wasteful number, since it uses less digits than its factorization.

40101321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 897.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 40101321 is about 6332.5603826572. The cubic root of 40101321 is about 342.2837066533.

Adding to 40101321 its reverse (12310104), we get a palindrome (52411425).

The spelling of 40101321 in words is "forty million, one hundred one thousand, three hundred twenty-one".