31040120230 has 64 divisors (see below), whose sum is σ = 66282043392. Its totient is φ = 10245075840.

The previous prime is 31040120213. The next prime is 31040120233. The reversal of 31040120230 is 3202104013.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31040120233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 123357 + ... + 278023.

It is an arithmetic number, because the mean of its divisors is an integer number (1035656928).

Almost surely, 2^31040120230 is an apocalyptic number.

31040120230 is an abundant number, since it is smaller than the sum of its proper divisors (35241923162).

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

31040120230 is a wasteful number, since it uses less digits than its factorization.

31040120230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154789.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 31040120230 its reverse (3202104013), we get a palindrome (34242224243).

The spelling of 31040120230 in words is "thirty-one billion, forty million, one hundred twenty thousand, two hundred thirty".