406040031 has 6 divisors (see below), whose sum is σ = 586502280. Its totient is φ = 270693348.

The previous prime is 406040029. The next prime is 406040059. The reversal of 406040031 is 130040604.

It is not a de Polignac number, because 406040031 - 2¹ = 406040029 is a prime.

It is a super-2 number, since 2×406040031² = 329737013548961922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 406039986 and 406040013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406040021) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22557771 + ... + 22557788.

It is an arithmetic number, because the mean of its divisors is an integer number (97750380).

Almost surely, 2^406040031 is an apocalyptic number.

406040031 is a deficient number, since it is larger than the sum of its proper divisors (180462249).

406040031 is a wasteful number, since it uses less digits than its factorization.

406040031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45115565 (or 45115562 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 406040031 is about 20150.4350077114. The cubic root of 406040031 is about 740.4963987361.

Adding to 406040031 its reverse (130040604), we get a palindrome (536080635).

The spelling of 406040031 in words is "four hundred six million, forty thousand, thirty-one".