134221121431 has 4 divisors (see below), whose sum is σ = 141285391000. Its totient is φ = 127156851864.

The previous prime is 134221121429. The next prime is 134221121467. The reversal of 134221121431 is 134121122431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134121122431 = 49871 ⋅2689361.

It is a cyclic number.

It is not a de Polignac number, because 134221121431 - 2¹ = 134221121429 is a prime.

It is a super-2 number, since 2×134221121431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 134221121396 and 134221121405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134221121471) 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, 3532134756 + ... + 3532134793.

It is an arithmetic number, because the mean of its divisors is an integer number (35321347750).

Almost surely, 2^134221121431 is an apocalyptic number.

134221121431 is a deficient number, since it is larger than the sum of its proper divisors (7064269569).

134221121431 is an equidigital number, since it uses as much as digits as its factorization.

134221121431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7064269568.

The product of its digits is 1152, while the sum is 25.

Adding to 134221121431 its reverse (134121122431), we get a palindrome (268342243862).

The spelling of 134221121431 in words is "one hundred thirty-four billion, two hundred twenty-one million, one hundred twenty-one thousand, four hundred thirty-one".