31212030030 has 16 divisors (see below), whose sum is σ = 74908872144. Its totient is φ = 8323208000.

The previous prime is 31212029983. The next prime is 31212030041. The reversal of 31212030030 is 3003021213.

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

It is a junction number, because it is equal to n+sod(n) for n = 31212029991 and 31212030009.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 520200471 + ... + 520200530.

It is an arithmetic number, because the mean of its divisors is an integer number (4681804509).

Almost surely, 2^31212030030 is an apocalyptic number.

31212030030 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31212030030 is an abundant number, since it is smaller than the sum of its proper divisors (43696842114).

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

31212030030 is a wasteful number, since it uses less digits than its factorization.

31212030030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040401011.

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 31212030030 its reverse (3003021213), we get a palindrome (34215051243).

The spelling of 31212030030 in words is "thirty-one billion, two hundred twelve million, thirty thousand, thirty".