133731211420 has 12 divisors (see below), whose sum is σ = 280835544024. Its totient is φ = 53492484560.

The previous prime is 133731211403. The next prime is 133731211429. The reversal of 133731211420 is 24112137331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133731211429) 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, 3343280266 + ... + 3343280305.

It is an arithmetic number, because the mean of its divisors is an integer number (23402962002).

Almost surely, 2^133731211420 is an apocalyptic number.

133731211420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133731211420 is an abundant number, since it is smaller than the sum of its proper divisors (147104332604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133731211420 is a wasteful number, since it uses less digits than its factorization.

133731211420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6686560580 (or 6686560578 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

Adding to 133731211420 its reverse (24112137331), we get a palindrome (157843348751).

The spelling of 133731211420 in words is "one hundred thirty-three billion, seven hundred thirty-one million, two hundred eleven thousand, four hundred twenty".