20431043134 has 16 divisors (see below), whose sum is σ = 31419534960. Its totient is φ = 9958777920.

The previous prime is 20431043131. The next prime is 20431043137. The reversal of 20431043134 is 43134013402.

It is an interprime number because it is at equal distance from previous prime (20431043131) and next prime (20431043137).

It is a junction number, because it is equal to n+sod(n) for n = 20431043099 and 20431043108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20431043131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183189 + ... + 272800.

It is an arithmetic number, because the mean of its divisors is an integer number (1963720935).

Almost surely, 2^20431043134 is an apocalyptic number.

20431043134 is a deficient number, since it is larger than the sum of its proper divisors (10988491826).

20431043134 is a wasteful number, since it uses less digits than its factorization.

20431043134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456555.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 20431043134 its reverse (43134013402), we get a palindrome (63565056536).

The spelling of 20431043134 in words is "twenty billion, four hundred thirty-one million, forty-three thousand, one hundred thirty-four".