20313030031 has 8 divisors (see below), whose sum is σ = 23236616480. Its totient is φ = 17394874848.

The previous prime is 20313030013. The next prime is 20313030097. The reversal of 20313030031 is 13003031302.

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

It is a cyclic number.

It is not a de Polignac number, because 20313030031 - 2²¹ = 20310932879 is a prime.

It is a super-2 number, since 2×20313030031² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20313029987 and 20313030014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20313030011) 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, 1349796 + ... + 1364761.

It is an arithmetic number, because the mean of its divisors is an integer number (2904577060).

Almost surely, 2^20313030031 is an apocalyptic number.

20313030031 is a deficient number, since it is larger than the sum of its proper divisors (2923586449).

20313030031 is a wasteful number, since it uses less digits than its factorization.

20313030031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2715633.

The product of its (nonzero) digits is 162, while the sum is 16.

Adding to 20313030031 its reverse (13003031302), we get a palindrome (33316061333).

The spelling of 20313030031 in words is "twenty billion, three hundred thirteen million, thirty thousand, thirty-one".