406655031 has 4 divisors (see below), whose sum is σ = 542206712. Its totient is φ = 271103352.

The previous prime is 406655027. The next prime is 406655033. The reversal of 406655031 is 130556604.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 406655031 - 2² = 406655027 is a prime.

It is a super-2 number, since 2×406655031² = 330736628475221922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 406655031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406655033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67775836 + ... + 67775841.

It is an arithmetic number, because the mean of its divisors is an integer number (135551678).

Almost surely, 2^406655031 is an apocalyptic number.

406655031 is a deficient number, since it is larger than the sum of its proper divisors (135551681).

406655031 is a wasteful number, since it uses less digits than its factorization.

406655031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135551680.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 406655031 is about 20165.6894501527. The cubic root of 406655031 is about 740.8700692451.

The spelling of 406655031 in words is "four hundred six million, six hundred fifty-five thousand, thirty-one".