31204033101240 has 32 divisors (see below), whose sum is σ = 93612099304080. Its totient is φ = 8321075493632.

The previous prime is 31204033101193. The next prime is 31204033101247. The reversal of 31204033101240 is 4210133040213.

It is a happy number.

It is a super-2 number, since 2×31204033101240² (a number of 28 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 31204033101240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31204033101247) by changing a digit.

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, 130016804469 + ... + 130016804708.

Almost surely, 2^{31204033101240} is an apocalyptic number.

31204033101240 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31204033101240 is an abundant number, since it is smaller than the sum of its proper divisors (62408066202840).

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

31204033101240 is a wasteful number, since it uses less digits than its factorization.

31204033101240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260033609191 (or 260033609187 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 31204033101240 its reverse (4210133040213), we get a palindrome (35414166141453).

The spelling of 31204033101240 in words is "thirty-one trillion, two hundred four billion, thirty-three million, one hundred one thousand, two hundred forty".