31031001212 has 6 divisors (see below), whose sum is σ = 54304252128. Its totient is φ = 15515500604.

The previous prime is 31031001203. The next prime is 31031001277. The reversal of 31031001212 is 21210013013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3878875148 + ... + 3878875155.

It is an arithmetic number, because the mean of its divisors is an integer number (9050708688).

Almost surely, 2^31031001212 is an apocalyptic number.

It is an amenable number.

31031001212 is a deficient number, since it is larger than the sum of its proper divisors (23273250916).

31031001212 is a wasteful number, since it uses less digits than its factorization.

31031001212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7757750307 (or 7757750305 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 31031001212 its reverse (21210013013), we get a palindrome (52241014225).

The spelling of 31031001212 in words is "thirty-one billion, thirty-one million, one thousand, two hundred twelve".