20030312031 has 16 divisors (see below), whose sum is σ = 28573587840. Its totient is φ = 12443332320.

The previous prime is 20030312017. The next prime is 20030312051. The reversal of 20030312031 is 13021303002.

It is not a de Polignac number, because 20030312031 - 2¹¹ = 20030309983 is a prime.

It is a super-2 number, since 2×20030312031² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20030312031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20030312051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2876925 + ... + 2883878.

It is an arithmetic number, because the mean of its divisors is an integer number (1785849240).

Almost surely, 2^20030312031 is an apocalyptic number.

20030312031 is a deficient number, since it is larger than the sum of its proper divisors (8543275809).

20030312031 is a wasteful number, since it uses less digits than its factorization.

20030312031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5760886.

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 20030312031 its reverse (13021303002), we get a palindrome (33051615033).

The spelling of 20030312031 in words is "twenty billion, thirty million, three hundred twelve thousand, thirty-one".