31012200230 has 32 divisors (see below), whose sum is σ = 60911021088. Its totient is φ = 11274508800.

The previous prime is 31012200217. The next prime is 31012200251. The reversal of 31012200230 is 3200221013.

It is a happy number.

It is a super-2 number, since 2×31012200230² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 470804 + ... + 532616.

It is an arithmetic number, because the mean of its divisors is an integer number (1903469409).

Almost surely, 2^31012200230 is an apocalyptic number.

31012200230 is a deficient number, since it is larger than the sum of its proper divisors (29898820858).

31012200230 is a wasteful number, since it uses less digits than its factorization.

31012200230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66392.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 31012200230 its reverse (3200221013), we get a palindrome (34212421243).

The spelling of 31012200230 in words is "thirty-one billion, twelve million, two hundred thousand, two hundred thirty".