20313020131 has 8 divisors (see below), whose sum is σ = 20787586160. Its totient is φ = 19838552832.

The previous prime is 20313020107. The next prime is 20313020237. The reversal of 20313020131 is 13102031302.

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-20313020131 is a prime.

It is a super-2 number, since 2×20313020131² (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 (20313024131) 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, 541231 + ... + 577543.

It is an arithmetic number, because the mean of its divisors is an integer number (2598448270).

Almost surely, 2^20313020131 is an apocalyptic number.

20313020131 is a deficient number, since it is larger than the sum of its proper divisors (474566029).

20313020131 is a wasteful number, since it uses less digits than its factorization.

20313020131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49365.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 20313020131 its reverse (13102031302), we get a palindrome (33415051433).

The spelling of 20313020131 in words is "twenty billion, three hundred thirteen million, twenty thousand, one hundred thirty-one".