31143332344 has 32 divisors (see below), whose sum is σ = 62898186240. Its totient is φ = 14414162400.

The previous prime is 31143332333. The next prime is 31143332351. The reversal of 31143332344 is 44323334113.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2724252 + ... + 2735659.

It is an arithmetic number, because the mean of its divisors is an integer number (1965568320).

Almost surely, 2^31143332344 is an apocalyptic number.

It is an amenable number.

31143332344 is an abundant number, since it is smaller than the sum of its proper divisors (31754853896).

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

31143332344 is a wasteful number, since it uses less digits than its factorization.

31143332344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5459971 (or 5459967 counting only the distinct ones).

The product of its digits is 31104, while the sum is 31.

Adding to 31143332344 its reverse (44323334113), we get a palindrome (75466666457).

The spelling of 31143332344 in words is "thirty-one billion, one hundred forty-three million, three hundred thirty-two thousand, three hundred forty-four".