31340252406 has 16 divisors (see below), whose sum is σ = 62833762800. Its totient is φ = 10421207808.

The previous prime is 31340252291. The next prime is 31340252459. The reversal of 31340252406 is 60425204313.

It is a super-2 number, since 2×31340252406² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6383091 + ... + 6387998.

It is an arithmetic number, because the mean of its divisors is an integer number (3927110175).

Almost surely, 2^31340252406 is an apocalyptic number.

31340252406 is an abundant number, since it is smaller than the sum of its proper divisors (31493510394).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31340252406 is a wasteful number, since it uses less digits than its factorization.

31340252406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12771503.

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 31340252406 its reverse (60425204313), we get a palindrome (91765456719).

The spelling of 31340252406 in words is "thirty-one billion, three hundred forty million, two hundred fifty-two thousand, four hundred six".