31103234340040 has 16 divisors (see below), whose sum is σ = 69982277265180. Its totient is φ = 12441293736000.

The previous prime is 31103234340023. The next prime is 31103234340067. The reversal of 31103234340040 is 4004343230113.

It can be written as a sum of positive squares in 2 ways, for example, as 30931906229316 + 171328110724 = 5561646^2 + 413918^2 .

It is a super-2 number, since 2×31103234340040² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31103234339990 and 31103234340008.

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 3 ways as a sum of consecutive naturals, for example, 388790429211 + ... + 388790429290.

Almost surely, 2^{31103234340040} is an apocalyptic number.

It is an amenable number.

31103234340040 is an abundant number, since it is smaller than the sum of its proper divisors (38879042925140).

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

31103234340040 is a wasteful number, since it uses less digits than its factorization.

31103234340040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 777580858512 (or 777580858508 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 31103234340040 its reverse (4004343230113), we get a palindrome (35107577570153).

The spelling of 31103234340040 in words is "thirty-one trillion, one hundred three billion, two hundred thirty-four million, three hundred forty thousand, forty".