133268867831 has 8 divisors (see below), whose sum is σ = 148930176528. Its totient is φ = 118198552000.

The previous prime is 133268867821. The next prime is 133268867843. The reversal of 133268867831 is 138768862331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 133268867831 - 2³⁴ = 116088998647 is a prime.

It is a super-2 number, since 2×133268867831² (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 (133268867821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147747740 + ... + 147748641.

It is an arithmetic number, because the mean of its divisors is an integer number (18616272066).

Almost surely, 2^133268867831 is an apocalyptic number.

133268867831 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

133268867831 is a deficient number, since it is larger than the sum of its proper divisors (15661308697).

133268867831 is a wasteful number, since it uses less digits than its factorization.

133268867831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295496433.

The product of its digits is 6967296, while the sum is 56.

The spelling of 133268867831 in words is "one hundred thirty-three billion, two hundred sixty-eight million, eight hundred sixty-seven thousand, eight hundred thirty-one".