31023143300 has 18 divisors (see below), whose sum is σ = 67320221178. Its totient is φ = 12409257280.

The previous prime is 31023143299. The next prime is 31023143303. The reversal of 31023143300 is 334132013.

It can be written as a sum of positive squares in 3 ways, for example, as 367335556 + 30655807744 = 19166^2 + 175088^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (31023143303) 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, 155115617 + ... + 155115816.

Almost surely, 2^31023143300 is an apocalyptic number.

It is an amenable number.

31023143300 is an abundant number, since it is smaller than the sum of its proper divisors (36297077878).

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

31023143300 is a wasteful number, since it uses less digits than its factorization.

31023143300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310231447 (or 310231440 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 31023143300 its reverse (334132013), we get a palindrome (31357275313).

The spelling of 31023143300 in words is "thirty-one billion, twenty-three million, one hundred forty-three thousand, three hundred".