31204313040 has 80 divisors (see below), whose sum is σ = 96759753408. Its totient is φ = 8318880768.

The previous prime is 31204313029. The next prime is 31204313069. The reversal of 31204313040 is 4031340213.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 31204312998 and 31204313016.

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, 981067 + ... + 1012373.

Almost surely, 2^31204313040 is an apocalyptic number.

31204313040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31204313040 is an abundant number, since it is smaller than the sum of its proper divisors (65555440368).

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

31204313040 is a wasteful number, since it uses less digits than its factorization.

31204313040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35476 (or 35470 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 31204313040 its reverse (4031340213), we get a palindrome (35235653253).

The spelling of 31204313040 in words is "thirty-one billion, two hundred four million, three hundred thirteen thousand, forty".