406273631 has 4 divisors (see below), whose sum is σ = 419379264. Its totient is φ = 393168000.

The previous prime is 406273627. The next prime is 406273649. The reversal of 406273631 is 136372604.

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

It is a cyclic number.

It is not a de Polignac number, because 406273631 - 2² = 406273627 is a prime.

It is a super-2 number, since 2×406273631² = 330116526491848322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406273601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6552770 + ... + 6552831.

It is an arithmetic number, because the mean of its divisors is an integer number (104844816).

Almost surely, 2^406273631 is an apocalyptic number.

406273631 is a deficient number, since it is larger than the sum of its proper divisors (13105633).

406273631 is a wasteful number, since it uses less digits than its factorization.

406273631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13105632.

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 406273631 is about 20156.2305751844. The cubic root of 406273631 is about 740.6383771813.

The spelling of 406273631 in words is "four hundred six million, two hundred seventy-three thousand, six hundred thirty-one".