31320131013100 has 18 divisors (see below), whose sum is σ = 67964684298644. Its totient is φ = 12528052405200.

The previous prime is 31320131013091. The next prime is 31320131013109. The reversal of 31320131013100 is 131013102313.

It is an interprime number because it is at equal distance from previous prime (31320131013091) and next prime (31320131013109).

It is a super-2 number, since 2×31320131013100² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31320131013109) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 156600654966 + ... + 156600655165.

Almost surely, 2^{31320131013100} is an apocalyptic number.

It is an amenable number.

31320131013100 is an abundant number, since it is smaller than the sum of its proper divisors (36644553285544).

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

31320131013100 is a wasteful number, since it uses less digits than its factorization.

31320131013100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313201310145 (or 313201310138 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 31320131013100 its reverse (131013102313), we get a palindrome (31451144115413).

The spelling of 31320131013100 in words is "thirty-one trillion, three hundred twenty billion, one hundred thirty-one million, thirteen thousand, one hundred".