133353908431 has 4 divisors (see below), whose sum is σ = 133355211352. Its totient is φ = 133352605512.

The previous prime is 133353908423. The next prime is 133353908449. The reversal of 133353908431 is 134809353331.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 133353908431 - 2³ = 133353908423 is a prime.

It is a super-2 number, since 2×133353908431² (a number of 23 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 (133353908491) 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, 483501 + ... + 707446.

It is an arithmetic number, because the mean of its divisors is an integer number (33338802838).

Almost surely, 2^133353908431 is an apocalyptic number.

133353908431 is a deficient number, since it is larger than the sum of its proper divisors (1302921).

133353908431 is a wasteful number, since it uses less digits than its factorization.

133353908431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1302920.

The product of its (nonzero) digits is 349920, while the sum is 43.

The spelling of 133353908431 in words is "one hundred thirty-three billion, three hundred fifty-three million, nine hundred eight thousand, four hundred thirty-one".