31321231133030 has 32 divisors (see below), whose sum is σ = 56998864567296. Its totient is φ = 12390956358624.

The previous prime is 31321231132993. The next prime is 31321231133041. The reversal of 31321231133030 is 3033113212313.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 23462684 + ... + 24761663.

It is an arithmetic number, because the mean of its divisors is an integer number (1781214517728).

Almost surely, 2^{31321231133030} is an apocalyptic number.

31321231133030 is a deficient number, since it is larger than the sum of its proper divisors (25677633434266).

31321231133030 is a wasteful number, since it uses less digits than its factorization.

31321231133030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48225068.

The product of its (nonzero) digits is 2916, while the sum is 26.

Adding to 31321231133030 its reverse (3033113212313), we get a palindrome (34354344345343).

The spelling of 31321231133030 in words is "thirty-one trillion, three hundred twenty-one billion, two hundred thirty-one million, one hundred thirty-three thousand, thirty".