31240110240340 has 24 divisors (see below), whose sum is σ = 65605213821672. Its totient is φ = 12495856988160.

The previous prime is 31240110240323. The next prime is 31240110240377. The reversal of 31240110240340 is 4304201104213.

It can be written as a sum of positive squares in 4 ways, for example, as 14607684 + 31240095632656 = 3822^2 + 5589284^2 .

It is a super-2 number, since 2×31240110240340² (a number of 28 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 (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10321221 + ... + 13000300.

It is an arithmetic number, because the mean of its divisors is an integer number (2733550575903).

Almost surely, 2^{31240110240340} is an apocalyptic number.

It is an amenable number.

31240110240340 is an abundant number, since it is smaller than the sum of its proper divisors (34365103581332).

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

31240110240340 is a wasteful number, since it uses less digits than its factorization.

31240110240340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23388507 (or 23388505 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 31240110240340 its reverse (4304201104213), we get a palindrome (35544311344553).

The spelling of 31240110240340 in words is "thirty-one trillion, two hundred forty billion, one hundred ten million, two hundred forty thousand, three hundred forty".