20340120131 has 8 divisors (see below), whose sum is σ = 20844054000. Its totient is φ = 19836559360.

The previous prime is 20340120121. The next prime is 20340120133. The reversal of 20340120131 is 13102104302.

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-20340120131 is a prime.

It is a super-2 number, since 2×20340120131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20340120133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18755 + ... + 202563.

It is an arithmetic number, because the mean of its divisors is an integer number (2605506750).

Almost surely, 2^20340120131 is an apocalyptic number.

20340120131 is a deficient number, since it is larger than the sum of its proper divisors (503933869).

20340120131 is a wasteful number, since it uses less digits than its factorization.

20340120131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186549.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 20340120131 its reverse (13102104302), we get a palindrome (33442224433).

The spelling of 20340120131 in words is "twenty billion, three hundred forty million, one hundred twenty thousand, one hundred thirty-one".