31220110230 has 32 divisors (see below), whose sum is σ = 77345307648. Its totient is φ = 8056802400.

The previous prime is 31220110189. The next prime is 31220110267. The reversal of 31220110230 is 3201102213.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16784076 + ... + 16785935.

It is an arithmetic number, because the mean of its divisors is an integer number (2417040864).

Almost surely, 2^31220110230 is an apocalyptic number.

31220110230 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31220110230 is an abundant number, since it is smaller than the sum of its proper divisors (46125197418).

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

31220110230 is a wasteful number, since it uses less digits than its factorization.

31220110230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33570052.

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

Adding to 31220110230 its reverse (3201102213), we get a palindrome (34421212443).

The spelling of 31220110230 in words is "thirty-one billion, two hundred twenty million, one hundred ten thousand, two hundred thirty".