31012230000 has 100 divisors (see below), whose sum is σ = 100111710248. Its totient is φ = 8269920000.

The previous prime is 31012229999. The next prime is 31012230017. The reversal of 31012230000 is 3221013.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (100).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 486871 + ... + 546870.

Almost surely, 2^31012230000 is an apocalyptic number.

31012230000 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31012230000 is an abundant number, since it is smaller than the sum of its proper divisors (69099480248).

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

31012230000 is a wasteful number, since it uses less digits than its factorization.

31012230000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1033772 (or 1033751 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 31012230000 its reverse (3221013), we get a palindrome (31015451013).

The spelling of 31012230000 in words is "thirty-one billion, twelve million, two hundred thirty thousand".