20102131029 has 4 divisors (see below), whose sum is σ = 26802841376. Its totient is φ = 13401420684.

The previous prime is 20102131003. The next prime is 20102131111. The reversal of 20102131029 is 92013120102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 20102131029 - 2⁷ = 20102130901 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20102130996 and 20102131014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102131229) 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, 3350355169 + ... + 3350355174.

It is an arithmetic number, because the mean of its divisors is an integer number (6700710344).

Almost surely, 2^20102131029 is an apocalyptic number.

It is an amenable number.

20102131029 is a deficient number, since it is larger than the sum of its proper divisors (6700710347).

20102131029 is an equidigital number, since it uses as much as digits as its factorization.

20102131029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6700710346.

The product of its (nonzero) digits is 216, while the sum is 21.

The spelling of 20102131029 in words is "twenty billion, one hundred two million, one hundred thirty-one thousand, twenty-nine".