401023111 has 8 divisors (see below), whose sum is σ = 402739200. Its totient is φ = 399311640.

The previous prime is 401023109. The next prime is 401023121. The reversal of 401023111 is 111320104.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 401023111 - 2¹ = 401023109 is a prime.

It is a super-2 number, since 2×401023111² = 321639071112236642, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 401023091 and 401023100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401023121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 435910 + ... + 436828.

It is an arithmetic number, because the mean of its divisors is an integer number (50342400).

Almost surely, 2^401023111 is an apocalyptic number.

401023111 is a deficient number, since it is larger than the sum of its proper divisors (1716089).

401023111 is an equidigital number, since it uses as much as digits as its factorization.

401023111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2309.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 401023111 is about 20025.5614403192. The cubic root of 401023111 is about 737.4339604182.

Adding to 401023111 its reverse (111320104), we get a palindrome (512343215).

The spelling of 401023111 in words is "four hundred one million, twenty-three thousand, one hundred eleven".