31001222130 has 32 divisors (see below), whose sum is σ = 78318878400. Its totient is φ = 7831887552.

The previous prime is 31001222123. The next prime is 31001222159. The reversal of 31001222130 is 3122210013.

It is a super-2 number, since 2×31001222130² (a number of 22 digits) contains 22 as substring.

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

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, 27193485 + ... + 27194624.

It is an arithmetic number, because the mean of its divisors is an integer number (2447464950).

Almost surely, 2^31001222130 is an apocalyptic number.

31001222130 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31001222130 is an abundant number, since it is smaller than the sum of its proper divisors (47317656270).

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

31001222130 is a wasteful number, since it uses less digits than its factorization.

31001222130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54388138.

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

Adding to 31001222130 its reverse (3122210013), we get a palindrome (34123432143).

The spelling of 31001222130 in words is "thirty-one billion, one million, two hundred twenty-two thousand, one hundred thirty".