20212312331309 has 32 divisors (see below), whose sum is σ = 23876332550400. Its totient is φ = 16748495857152.

The previous prime is 20212312331269. The next prime is 20212312331359. The reversal of 20212312331309 is 90313321321202.

It is a cyclic number.

It is not a de Polignac number, because 20212312331309 - 2³⁶ = 20143592854573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20212312331359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 154997867 + ... + 155128215.

It is an arithmetic number, because the mean of its divisors is an integer number (746135392200).

Almost surely, 2^{20212312331309} is an apocalyptic number.

It is an amenable number.

20212312331309 is a deficient number, since it is larger than the sum of its proper divisors (3664020219091).

20212312331309 is a wasteful number, since it uses less digits than its factorization.

20212312331309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134229.

The product of its (nonzero) digits is 11664, while the sum is 32.

The spelling of 20212312331309 in words is "twenty trillion, two hundred twelve billion, three hundred twelve million, three hundred thirty-one thousand, three hundred nine".