31204343040 has 144 divisors (see below), whose sum is σ = 107325109248. Its totient is φ = 7681056768.

The previous prime is 31204343039. The next prime is 31204343083. The reversal of 31204343040 is 4034340213.

It is a super-2 number, since 2×31204343040² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 31204343040.

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 15 ways as a sum of consecutive naturals, for example, 262624 + ... + 362463.

Almost surely, 2^31204343040 is an apocalyptic number.

31204343040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31204343040 is an abundant number, since it is smaller than the sum of its proper divisors (76120766208).

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

31204343040 is a wasteful number, since it uses less digits than its factorization.

31204343040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625124 (or 625110 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 31204343040 its reverse (4034340213), we get a palindrome (35238683253).

The spelling of 31204343040 in words is "thirty-one billion, two hundred four million, three hundred forty-three thousand, forty".