31231120330002 has 16 divisors (see below), whose sum is σ = 62474811104160. Its totient is φ = 10408278369312.

The previous prime is 31231120330001. The next prime is 31231120330021. The reversal of 31231120330002 is 20003302113213.

It is not an unprimeable number, because it can be changed into a prime (31231120330001) 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, 523736208 + ... + 523795835.

It is an arithmetic number, because the mean of its divisors is an integer number (3904675694010).

Almost surely, 2^{31231120330002} is an apocalyptic number.

31231120330002 is an abundant number, since it is smaller than the sum of its proper divisors (31243690774158).

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

31231120330002 is a wasteful number, since it uses less digits than its factorization.

31231120330002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1047537017.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 31231120330002 its reverse (20003302113213), we get a palindrome (51234422443215).

The spelling of 31231120330002 in words is "thirty-one trillion, two hundred thirty-one billion, one hundred twenty million, three hundred thirty thousand, two".