400030111 has 16 divisors (see below), whose sum is σ = 458244864. Its totient is φ = 345936384.

The previous prime is 400030087. The next prime is 400030129. The reversal of 400030111 is 111030004.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 400030111 - 2⁹ = 400029599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400030151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45225 + ... + 53341.

It is an arithmetic number, because the mean of its divisors is an integer number (28640304).

Almost surely, 2^400030111 is an apocalyptic number.

400030111 is a deficient number, since it is larger than the sum of its proper divisors (58214753).

400030111 is a wasteful number, since it uses less digits than its factorization.

400030111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8370.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 400030111 is about 20000.7527608338. The cubic root of 400030111 is about 736.8247875763.

Adding to 400030111 its reverse (111030004), we get a palindrome (511060115).

The spelling of 400030111 in words is "four hundred million, thirty thousand, one hundred eleven".