31340233400 has 72 divisors (see below), whose sum is σ = 84762565920. Its totient is φ = 10745219520.

The previous prime is 31340233361. The next prime is 31340233403. The reversal of 31340233400 is 433204313.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31340233403) by changing a digit.

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 17 ways as a sum of consecutive naturals, for example, 1589192 + ... + 1608791.

It is an arithmetic number, because the mean of its divisors is an integer number (1177257860).

Almost surely, 2^31340233400 is an apocalyptic number.

It is an amenable number.

31340233400 is an abundant number, since it is smaller than the sum of its proper divisors (53422332520).

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

31340233400 is a wasteful number, since it uses less digits than its factorization.

31340233400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3198013 (or 3197997 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 23.

Adding to 31340233400 its reverse (433204313), we get a palindrome (31773437713).

The spelling of 31340233400 in words is "thirty-one billion, three hundred forty million, two hundred thirty-three thousand, four hundred".