31000410405 has 48 divisors (see below), whose sum is σ = 54029639664. Its totient is φ = 16442818560.

The previous prime is 31000410383. The next prime is 31000410439. The reversal of 31000410405 is 50401400013.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 2333179809 + 28667230596 = 48303^2 + 169314^2 .

It is not a de Polignac number, because 31000410405 - 2¹² = 31000406309 is a prime.

It is a super-2 number, since 2×31000410405² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8752935 + ... + 8756475.

It is an arithmetic number, because the mean of its divisors is an integer number (1125617493).

Almost surely, 2^31000410405 is an apocalyptic number.

It is an amenable number.

31000410405 is a deficient number, since it is larger than the sum of its proper divisors (23029229259).

31000410405 is a wasteful number, since it uses less digits than its factorization.

31000410405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4566 (or 4563 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

Adding to 31000410405 its reverse (50401400013), we get a palindrome (81401810418).

The spelling of 31000410405 in words is "thirty-one billion, four hundred ten thousand, four hundred five".