31320044030040 has 128 divisors (see below), whose sum is σ = 94214817792000. Its totient is φ = 8329377369600.

The previous prime is 31320044030029. The next prime is 31320044030053. The reversal of 31320044030040 is 4003044002313.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 565326261 + ... + 565381659.

It is an arithmetic number, because the mean of its divisors is an integer number (736053264000).

Almost surely, 2^{31320044030040} is an apocalyptic number.

31320044030040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31320044030040 is an abundant number, since it is smaller than the sum of its proper divisors (62894773761960).

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

31320044030040 is a wasteful number, since it uses less digits than its factorization.

31320044030040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68097 (or 68093 counting only the distinct ones).

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

Adding to 31320044030040 its reverse (4003044002313), we get a palindrome (35323088032353).

The spelling of 31320044030040 in words is "thirty-one trillion, three hundred twenty billion, forty-four million, thirty thousand, forty".