31013230332136 has 128 divisors (see below), whose sum is σ = 64489053484800. Its totient is φ = 13893728808960.

The previous prime is 31013230332113. The next prime is 31013230332137. The reversal of 31013230332136 is 63123303231013.

It is a junction number, because it is equal to n+sod(n) for n = 31013230332098 and 31013230332107.

It is not an unprimeable number, because it can be changed into a prime (31013230332137) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 926608810 + ... + 926642278.

It is an arithmetic number, because the mean of its divisors is an integer number (503820730350).

Almost surely, 2^{31013230332136} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31013230332136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32244526742400).

31013230332136 is an abundant number, since it is smaller than the sum of its proper divisors (33475823152664).

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

31013230332136 is a wasteful number, since it uses less digits than its factorization.

31013230332136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35499 (or 35495 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 31.

Adding to 31013230332136 its reverse (63123303231013), we get a palindrome (94136533563149).

The spelling of 31013230332136 in words is "thirty-one trillion, thirteen billion, two hundred thirty million, three hundred thirty-two thousand, one hundred thirty-six".