20131202345 has 8 divisors (see below), whose sum is σ = 24174427776. Its totient is φ = 16093638576.

The previous prime is 20131202327. The next prime is 20131202363. The reversal of 20131202345 is 54320213102.

It is an interprime number because it is at equal distance from previous prime (20131202327) and next prime (20131202363).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20131202345 is a prime.

It is a super-3 number, since 3×20131202345³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20131202345.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1407587 + ... + 1421816.

It is an arithmetic number, because the mean of its divisors is an integer number (3021803472).

Almost surely, 2^20131202345 is an apocalyptic number.

It is an amenable number.

20131202345 is a deficient number, since it is larger than the sum of its proper divisors (4043225431).

20131202345 is a wasteful number, since it uses less digits than its factorization.

20131202345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2830831.

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 20131202345 its reverse (54320213102), we get a palindrome (74451415447).

The spelling of 20131202345 in words is "twenty billion, one hundred thirty-one million, two hundred two thousand, three hundred forty-five".