31212103132330 has 16 divisors (see below), whose sum is σ = 56202357560544. Its totient is φ = 12480269714640.

The previous prime is 31212103132321. The next prime is 31212103132351. The reversal of 31212103132330 is 3323130121213.

It is a junction number, because it is equal to n+sod(n) for n = 31212103132295 and 31212103132304.

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, 571413612 + ... + 571468231.

It is an arithmetic number, because the mean of its divisors is an integer number (3512647347534).

Almost surely, 2^{31212103132330} is an apocalyptic number.

31212103132330 is a deficient number, since it is larger than the sum of its proper divisors (24990254428214).

31212103132330 is a wasteful number, since it uses less digits than its factorization.

31212103132330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1142884581.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 31212103132330 its reverse (3323130121213), we get a palindrome (34535233253543).

The spelling of 31212103132330 in words is "thirty-one trillion, two hundred twelve billion, one hundred three million, one hundred thirty-two thousand, three hundred thirty".