31220010010 has 128 divisors (see below), whose sum is σ = 66284241408. Its totient is φ = 10368000000.

The previous prime is 31220009993. The next prime is 31220010011. The reversal of 31220010010 is 1001002213.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (31220010011) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 124382385 + ... + 124382635.

It is an arithmetic number, because the mean of its divisors is an integer number (517845636).

Almost surely, 2^31220010010 is an apocalyptic number.

31220010010 is an abundant number, since it is smaller than the sum of its proper divisors (35064231398).

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

31220010010 is a wasteful number, since it uses less digits than its factorization.

31220010010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680.

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 31220010010 its reverse (1001002213), we get a palindrome (32221012223).

The spelling of 31220010010 in words is "thirty-one billion, two hundred twenty million, ten thousand, ten".