31213112000302 has 4 divisors (see below), whose sum is σ = 46819668000456. Its totient is φ = 15606556000150.

The previous prime is 31213112000293. The next prime is 31213112000339. The reversal of 31213112000302 is 20300021131213.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 31213112000302.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7803278000074 + ... + 7803278000077.

It is an arithmetic number, because the mean of its divisors is an integer number (11704917000114).

Almost surely, 2^{31213112000302} is an apocalyptic number.

31213112000302 is a deficient number, since it is larger than the sum of its proper divisors (15606556000154).

31213112000302 is a wasteful number, since it uses less digits than its factorization.

31213112000302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15606556000153.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 31213112000302 its reverse (20300021131213), we get a palindrome (51513133131515).

The spelling of 31213112000302 in words is "thirty-one trillion, two hundred thirteen billion, one hundred twelve million, three hundred two", and thus it is an aban number.