20234609381 has 4 divisors (see below), whose sum is σ = 23125267872. Its totient is φ = 17343950892.

The previous prime is 20234609371. The next prime is 20234609407. The reversal of 20234609381 is 18390643202.

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 a cyclic number.

It is not a de Polignac number, because 20234609381 - 2¹⁴ = 20234592997 is a prime.

It is a super-2 number, since 2×20234609381² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20234609371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1445329235 + ... + 1445329248.

It is an arithmetic number, because the mean of its divisors is an integer number (5781316968).

Almost surely, 2^20234609381 is an apocalyptic number.

It is an amenable number.

20234609381 is a deficient number, since it is larger than the sum of its proper divisors (2890658491).

20234609381 is an equidigital number, since it uses as much as digits as its factorization.

20234609381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2890658490.

The product of its (nonzero) digits is 62208, while the sum is 38.

The spelling of 20234609381 in words is "twenty billion, two hundred thirty-four million, six hundred nine thousand, three hundred eighty-one".