31200040230 has 32 divisors (see below), whose sum is σ = 74884743648. Its totient is φ = 8319494400.

The previous prime is 31200040213. The next prime is 31200040243. The reversal of 31200040230 is 3204000213.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 915700 + ... + 949160.

It is an arithmetic number, because the mean of its divisors is an integer number (2340148239).

Almost surely, 2^31200040230 is an apocalyptic number.

31200040230 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31200040230 is an abundant number, since it is smaller than the sum of its proper divisors (43684703418).

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

31200040230 is a wasteful number, since it uses less digits than its factorization.

31200040230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64552.

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 31200040230 its reverse (3204000213), we get a palindrome (34404040443).

The spelling of 31200040230 in words is "thirty-one billion, two hundred million, forty thousand, two hundred thirty".