31231320130010 has 128 divisors (see below), whose sum is σ = 76542421229568. Its totient is φ = 8859076128000.

The previous prime is 31231320129949. The next prime is 31231320130067. The reversal of 31231320130010 is 1003102313213.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 21261206 + ... + 22682625.

It is an arithmetic number, because the mean of its divisors is an integer number (597987665856).

Almost surely, 2^{31231320130010} is an apocalyptic number.

31231320130010 is an abundant number, since it is smaller than the sum of its proper divisors (45311101099558).

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

31231320130010 is a wasteful number, since it uses less digits than its factorization.

31231320130010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43943940.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 31231320130010 its reverse (1003102313213), we get a palindrome (32234422443223).

The spelling of 31231320130010 in words is "thirty-one trillion, two hundred thirty-one billion, three hundred twenty million, one hundred thirty thousand, ten".