31203212010 has 16 divisors (see below), whose sum is σ = 74887708896. Its totient is φ = 8320856528.

The previous prime is 31203212009. The next prime is 31203212017. The reversal of 31203212010 is 1021230213.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31203212017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 520053504 + ... + 520053563.

It is an arithmetic number, because the mean of its divisors is an integer number (4680481806).

Almost surely, 2^31203212010 is an apocalyptic number.

31203212010 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31203212010 is an abundant number, since it is smaller than the sum of its proper divisors (43684496886).

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

31203212010 is a wasteful number, since it uses less digits than its factorization.

31203212010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040107077.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 31203212010 its reverse (1021230213), we get a palindrome (32224442223).

The spelling of 31203212010 in words is "thirty-one billion, two hundred three million, two hundred twelve thousand, ten".