31143310000 has 100 divisors (see below), whose sum is σ = 82256000904. Its totient is φ = 11324800000.

The previous prime is 31143309971. The next prime is 31143310027. The reversal of 31143310000 is 1334113.

It is a tau number, because it is divible by the number of its divisors (100).

It is a super-2 number, since 2×31143310000² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 31561 + ... + 251560.

Almost surely, 2^31143310000 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 31143310000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41128000452).

31143310000 is an abundant number, since it is smaller than the sum of its proper divisors (51112690904).

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

31143310000 is a wasteful number, since it uses less digits than its factorization.

31143310000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283160 (or 283139 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 31143310000 its reverse (1334113), we get a palindrome (31144644113).

It can be divided in two parts, 31143 and 310000, that added together give a palindrome (341143).

The spelling of 31143310000 in words is "thirty-one billion, one hundred forty-three million, three hundred ten thousand".