31212322010 has 32 divisors (see below), whose sum is σ = 60108652800. Its totient is φ = 11633924160.

The previous prime is 31212322003. The next prime is 31212322019. The reversal of 31212322010 is 1022321213.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 31212322010.

It is not an unprimeable number, because it can be changed into a prime (31212322019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1334930 + ... + 1358109.

It is an arithmetic number, because the mean of its divisors is an integer number (1878395400).

Almost surely, 2^31212322010 is an apocalyptic number.

31212322010 is a deficient number, since it is larger than the sum of its proper divisors (28896330790).

31212322010 is a wasteful number, since it uses less digits than its factorization.

31212322010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2693126.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 31212322010 its reverse (1022321213), we get a palindrome (32234643223).

The spelling of 31212322010 in words is "thirty-one billion, two hundred twelve million, three hundred twenty-two thousand, ten".