133431434140 has 24 divisors (see below), whose sum is σ = 294953697360. Its totient is φ = 50563490688.

The previous prime is 133431434119. The next prime is 133431434161. The reversal of 133431434140 is 41434134331.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (133431434119) and next prime (133431434161).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175567297 + ... + 175568056.

It is an arithmetic number, because the mean of its divisors is an integer number (12289737390).

Almost surely, 2^133431434140 is an apocalyptic number.

133431434140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133431434140 is an abundant number, since it is smaller than the sum of its proper divisors (161522263220).

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

133431434140 is a wasteful number, since it uses less digits than its factorization.

133431434140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351135381 (or 351135379 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 133431434140 its reverse (41434134331), we get a palindrome (174865568471).

The spelling of 133431434140 in words is "one hundred thirty-three billion, four hundred thirty-one million, four hundred thirty-four thousand, one hundred forty".