20130102031 has 16 divisors (see below), whose sum is σ = 21870481248. Its totient is φ = 18417484800.

The previous prime is 20130101993. The next prime is 20130102049. The reversal of 20130102031 is 13020103102.

It is not a de Polignac number, because 20130102031 - 2²⁷ = 19995884303 is a prime.

It is a super-2 number, since 2×20130102031² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20130102331) 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, 1493635 + ... + 1507051.

It is an arithmetic number, because the mean of its divisors is an integer number (1366905078).

Almost surely, 2^20130102031 is an apocalyptic number.

20130102031 is a deficient number, since it is larger than the sum of its proper divisors (1740379217).

20130102031 is a wasteful number, since it uses less digits than its factorization.

20130102031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14442.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 20130102031 its reverse (13020103102), we get a palindrome (33150205133).

The spelling of 20130102031 in words is "twenty billion, one hundred thirty million, one hundred two thousand, thirty-one".