340242031121 has 4 divisors (see below), whose sum is σ = 351217580544. Its totient is φ = 329266481700.

The previous prime is 340242031111. The next prime is 340242031141. The reversal of 340242031121 is 121130242043.

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 340242031121 - 2³⁴ = 323062161937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340242031111) 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, 5487774665 + ... + 5487774726.

It is an arithmetic number, because the mean of its divisors is an integer number (87804395136).

Almost surely, 2^340242031121 is an apocalyptic number.

340242031121 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

340242031121 is a deficient number, since it is larger than the sum of its proper divisors (10975549423).

340242031121 is a wasteful number, since it uses less digits than its factorization.

340242031121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10975549422.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 340242031121 its reverse (121130242043), we get a palindrome (461372273164).

The spelling of 340242031121 in words is "three hundred forty billion, two hundred forty-two million, thirty-one thousand, one hundred twenty-one".