20100103031 has 16 divisors (see below), whose sum is σ = 20674307808. Its totient is φ = 19533696000.

The previous prime is 20100103013. The next prime is 20100103061. The reversal of 20100103031 is 13030100102.

It is a cyclic number.

It is not a de Polignac number, because 20100103031 - 2¹⁰ = 20100102007 is a prime.

It is a super-2 number, since 2×20100103031² (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 (20100103061) 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, 4170335 + ... + 4175151.

It is an arithmetic number, because the mean of its divisors is an integer number (1292144238).

Almost surely, 2^20100103031 is an apocalyptic number.

20100103031 is a deficient number, since it is larger than the sum of its proper divisors (574204777).

20100103031 is a wasteful number, since it uses less digits than its factorization.

20100103031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5602.

The product of its (nonzero) digits is 18, while the sum is 11.

Adding to 20100103031 its reverse (13030100102), we get a palindrome (33130203133).

The spelling of 20100103031 in words is "twenty billion, one hundred million, one hundred three thousand, thirty-one".