406111631 has 8 divisors (see below), whose sum is σ = 417506304. Its totient is φ = 394831800.

The previous prime is 406111627. The next prime is 406111633. The reversal of 406111631 is 136111604.

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 406111631 - 2² = 406111627 is a prime.

It is a super-2 number, since 2×406111631² = 329853313666960322, 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 = 406111597 and 406111606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406111633) 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, 21515 + ... + 35708.

It is an arithmetic number, because the mean of its divisors is an integer number (52188288).

Almost surely, 2^406111631 is an apocalyptic number.

406111631 is a deficient number, since it is larger than the sum of its proper divisors (11394673).

406111631 is a wasteful number, since it uses less digits than its factorization.

406111631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57421.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 406111631 is about 20152.2115659796. The cubic root of 406111631 is about 740.5399218882.

The spelling of 406111631 in words is "four hundred six million, one hundred eleven thousand, six hundred thirty-one".