31204101030140 has 24 divisors (see below), whose sum is σ = 65839174315152. Its totient is φ = 12422485716480.

The previous prime is 31204101030139. The next prime is 31204101030143. The reversal of 31204101030140 is 4103010140213.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31204101030143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3697164149 + ... + 3697172588.

It is an arithmetic number, because the mean of its divisors is an integer number (2743298929798).

Almost surely, 2^{31204101030140} is an apocalyptic number.

It is an amenable number.

31204101030140 is an abundant number, since it is smaller than the sum of its proper divisors (34635073285012).

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

31204101030140 is a wasteful number, since it uses less digits than its factorization.

31204101030140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7394336957 (or 7394336955 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 31204101030140 its reverse (4103010140213), we get a palindrome (35307111170353).

The spelling of 31204101030140 in words is "thirty-one trillion, two hundred four billion, one hundred one million, thirty thousand, one hundred forty".