20130100193731 has 6 divisors (see below), whose sum is σ = 22126473766796. Its totient is φ = 18300091085100.

The previous prime is 20130100193729. The next prime is 20130100193767. The reversal of 20130100193731 is 13739100103102.

It is not a de Polignac number, because 20130100193731 - 2¹ = 20130100193729 is a prime.

It is a super-2 number, since 2×20130100193731² (a number of 27 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 = 20130100193693 and 20130100193702.

It is not an unprimeable number, because it can be changed into a prime (20130100193711) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 83182232085 + ... + 83182232326.

Almost surely, 2^{20130100193731} is an apocalyptic number.

20130100193731 is a deficient number, since it is larger than the sum of its proper divisors (1996373573065).

20130100193731 is a wasteful number, since it uses less digits than its factorization.

20130100193731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166364464433 (or 166364464422 counting only the distinct ones).

The product of its (nonzero) digits is 3402, while the sum is 31.

Adding to 20130100193731 its reverse (13739100103102), we get a palindrome (33869200296833).

The spelling of 20130100193731 in words is "twenty trillion, one hundred thirty billion, one hundred million, one hundred ninety-three thousand, seven hundred thirty-one".