234820871381 has 4 divisors (see below), whose sum is σ = 237015459072. Its totient is φ = 232626283692.

The previous prime is 234820871339. The next prime is 234820871401. The reversal of 234820871381 is 183178028432.

234820871381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 234820871381 - 2¹⁸ = 234820609237 is a prime.

It is a super-2 number, since 2×234820871381² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (234820871081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1097293685 + ... + 1097293898.

It is an arithmetic number, because the mean of its divisors is an integer number (59253864768).

Almost surely, 2^234820871381 is an apocalyptic number.

It is an amenable number.

234820871381 is a deficient number, since it is larger than the sum of its proper divisors (2194587691).

234820871381 is a wasteful number, since it uses less digits than its factorization.

234820871381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2194587690.

The product of its (nonzero) digits is 516096, while the sum is 47.

The spelling of 234820871381 in words is "two hundred thirty-four billion, eight hundred twenty million, eight hundred seventy-one thousand, three hundred eighty-one".