31233454340 has 96 divisors (see below), whose sum is σ = 75820002048. Its totient is φ = 10681344000.

The previous prime is 31233454309. The next prime is 31233454453. The reversal of 31233454340 is 4345433213.

It is a junction number, because it is equal to n+sod(n) for n = 31233454297 and 31233454306.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6845660 + ... + 6850220.

It is an arithmetic number, because the mean of its divisors is an integer number (789791688).

Almost surely, 2^31233454340 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 31233454340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37910001024).

31233454340 is an abundant number, since it is smaller than the sum of its proper divisors (44586547708).

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

31233454340 is a wasteful number, since it uses less digits than its factorization.

31233454340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6429 (or 6427 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 32.

Adding to 31233454340 its reverse (4345433213), we get a palindrome (35578887553).

The spelling of 31233454340 in words is "thirty-one billion, two hundred thirty-three million, four hundred fifty-four thousand, three hundred forty".