31012300536 has 128 divisors (see below), whose sum is σ = 93403392000. Its totient is φ = 8382310272.

The previous prime is 31012300531. The next prime is 31012300549. The reversal of 31012300536 is 63500321013.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31012300531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2352315 + ... + 2365461.

It is an arithmetic number, because the mean of its divisors is an integer number (729714000).

Almost surely, 2^31012300536 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 31012300536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46701696000).

31012300536 is an abundant number, since it is smaller than the sum of its proper divisors (62391091464).

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

31012300536 is a wasteful number, since it uses less digits than its factorization.

31012300536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13921 (or 13917 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 24.

Adding to 31012300536 its reverse (63500321013), we get a palindrome (94512621549).

The spelling of 31012300536 in words is "thirty-one billion, twelve million, three hundred thousand, five hundred thirty-six".