20313135031 has 8 divisors (see below), whose sum is σ = 23216232960. Its totient is φ = 17410342488.

The previous prime is 20313135001. The next prime is 20313135043. The reversal of 20313135031 is 13053131302.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-20313135031 is a prime.

It is a super-2 number, since 2×20313135031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20313134993 and 20313135011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20313135001) 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, 90510 + ... + 220948.

It is an arithmetic number, because the mean of its divisors is an integer number (2902029120).

Almost surely, 2^20313135031 is an apocalyptic number.

20313135031 is a deficient number, since it is larger than the sum of its proper divisors (2903097929).

20313135031 is a wasteful number, since it uses less digits than its factorization.

20313135031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152693.

The product of its (nonzero) digits is 810, while the sum is 22.

Adding to 20313135031 its reverse (13053131302), we get a palindrome (33366266333).

The spelling of 20313135031 in words is "twenty billion, three hundred thirteen million, one hundred thirty-five thousand, thirty-one".