31321111203130 has 32 divisors (see below), whose sum is σ = 64439381128320. Its totient is φ = 10737436541760.

The previous prime is 31321111203097. The next prime is 31321111203131. The reversal of 31321111203130 is 3130211112313.

It is a super-2 number, since 2×31321111203130² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31321111203131) 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 15 ways as a sum of consecutive naturals, for example, 25012725 + ... + 26235064.

It is an arithmetic number, because the mean of its divisors is an integer number (2013730660260).

Almost surely, 2^{31321111203130} is an apocalyptic number.

31321111203130 is an abundant number, since it is smaller than the sum of its proper divisors (33118269925190).

31321111203130 is a wasteful number, since it uses less digits than its factorization.

31321111203130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51256534.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 31321111203130 its reverse (3130211112313), we get a palindrome (34451322315443).

The spelling of 31321111203130 in words is "thirty-one trillion, three hundred twenty-one billion, one hundred eleven million, two hundred three thousand, one hundred thirty".