31232231000 has 32 divisors (see below), whose sum is σ = 73083422880. Its totient is φ = 12492892000.

The previous prime is 31232230957. The next prime is 31232231059. The reversal of 31232231000 is 13223213.

It is a super-2 number, since 2×31232231000² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31232231000.

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, 15615116 + ... + 15617115.

It is an arithmetic number, because the mean of its divisors is an integer number (2283856965).

Almost surely, 2^31232231000 is an apocalyptic number.

It is an amenable number.

31232231000 is an abundant number, since it is smaller than the sum of its proper divisors (41851191880).

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

31232231000 is a wasteful number, since it uses less digits than its factorization.

31232231000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31232252 (or 31232238 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 31232231000 its reverse (13223213), we get a palindrome (31245454213).

The spelling of 31232231000 in words is "thirty-one billion, two hundred thirty-two million, two hundred thirty-one thousand".