31343223344140 has 12 divisors (see below), whose sum is σ = 65820769022736. Its totient is φ = 12537289337648.

The previous prime is 31343223344123. The next prime is 31343223344141. The reversal of 31343223344140 is 4144332234313.

It is a self number, because there is not a number n which added to its sum of digits gives 31343223344140.

It is not an unprimeable number, because it can be changed into a prime (31343223344141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 783580583584 + ... + 783580583623.

It is an arithmetic number, because the mean of its divisors is an integer number (5485064085228).

Almost surely, 2^{31343223344140} is an apocalyptic number.

It is an amenable number.

31343223344140 is an abundant number, since it is smaller than the sum of its proper divisors (34477545678596).

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

31343223344140 is a wasteful number, since it uses less digits than its factorization.

31343223344140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1567161167216 (or 1567161167214 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 37.

Adding to 31343223344140 its reverse (4144332234313), we get a palindrome (35487555578453).

The spelling of 31343223344140 in words is "thirty-one trillion, three hundred forty-three billion, two hundred twenty-three million, three hundred forty-four thousand, one hundred forty".