31230412012 has 12 divisors (see below), whose sum is σ = 55083562240. Its totient is φ = 15492251376.

The previous prime is 31230412007. The next prime is 31230412013. The reversal of 31230412012 is 21021403213.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (31230412013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30738087 + ... + 30739102.

Almost surely, 2^31230412012 is an apocalyptic number.

It is an amenable number.

31230412012 is a deficient number, since it is larger than the sum of its proper divisors (23853150228).

31230412012 is a wasteful number, since it uses less digits than its factorization.

31230412012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61477320 (or 61477318 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 31230412012 its reverse (21021403213), we get a palindrome (52251815225).

The spelling of 31230412012 in words is "thirty-one billion, two hundred thirty million, four hundred twelve thousand, twelve".