31212003130 has 64 divisors (see below), whose sum is σ = 72459982080. Its totient is φ = 9392947200.

The previous prime is 31212003103. The next prime is 31212003149. The reversal of 31212003130 is 3130021213.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 676551 + ... + 721210.

It is an arithmetic number, because the mean of its divisors is an integer number (1132187220).

Almost surely, 2^31212003130 is an apocalyptic number.

31212003130 is an abundant number, since it is smaller than the sum of its proper divisors (41247978950).

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

31212003130 is a wasteful number, since it uses less digits than its factorization.

31212003130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1397815.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 31212003130 its reverse (3130021213), we get a palindrome (34342024343).

The spelling of 31212003130 in words is "thirty-one billion, two hundred twelve million, three thousand, one hundred thirty".