20010030031 has 4 divisors (see below), whose sum is σ = 20010661200. Its totient is φ = 20009398864.

The previous prime is 20010030011. The next prime is 20010030037. The reversal of 20010030031 is 13003001002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20010030031 - 2⁵ = 20010029999 is a prime.

It is a super-2 number, since 2×20010030031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010030037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 265366 + ... + 332323.

It is an arithmetic number, because the mean of its divisors is an integer number (5002665300).

Almost surely, 2^20010030031 is an apocalyptic number.

20010030031 is a deficient number, since it is larger than the sum of its proper divisors (631169).

20010030031 is an equidigital number, since it uses as much as digits as its factorization.

20010030031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631168.

The product of its (nonzero) digits is 18, while the sum is 10.

Adding to 20010030031 its reverse (13003001002), we get a palindrome (33013031033).

The spelling of 20010030031 in words is "twenty billion, ten million, thirty thousand, thirty-one".