31023012300 has 144 divisors (see below), whose sum is σ = 104676633600. Its totient is φ = 7090950720.

The previous prime is 31023012289. The next prime is 31023012301. The reversal of 31023012300 is 321032013.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 31023012300.

It is not an unprimeable number, because it can be changed into a prime (31023012301) 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 47 ways as a sum of consecutive naturals, for example, 47844 + ... + 253643.

Almost surely, 2^31023012300 is an apocalyptic number.

31023012300 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31023012300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52338316800).

31023012300 is an abundant number, since it is smaller than the sum of its proper divisors (73653621300).

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

31023012300 is a wasteful number, since it uses less digits than its factorization.

31023012300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301525 (or 301504 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 31023012300 its reverse (321032013), we get a palindrome (31344044313).

The spelling of 31023012300 in words is "thirty-one billion, twenty-three million, twelve thousand, three hundred".