31143313300 has 144 divisors (see below), whose sum is σ = 78721961472. Its totient is φ = 10580169600.

The previous prime is 31143313283. The next prime is 31143313309. The reversal of 31143313300 is 331334113.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31143313309) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1073587 + ... + 1102213.

It is an arithmetic number, because the mean of its divisors is an integer number (546680288).

Almost surely, 2^31143313300 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 31143313300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39360980736).

31143313300 is an abundant number, since it is smaller than the sum of its proper divisors (47578648172).

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

31143313300 is a wasteful number, since it uses less digits than its factorization.

31143313300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28718 (or 28711 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 31143313300 its reverse (331334113), we get a palindrome (31474647413).

It can be divided in two parts, 31143 and 313300, that added together give a palindrome (344443).

The spelling of 31143313300 in words is "thirty-one billion, one hundred forty-three million, three hundred thirteen thousand, three hundred".