133001431 has 8 divisors (see below), whose sum is σ = 133823664. Its totient is φ = 132182400.

The previous prime is 133001419. The next prime is 133001459. The reversal of 133001431 is 134100331.

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 133001431 - 2¹⁵ = 132968663 is a prime.

It is a super-2 number, since 2×133001431² = 35378761296095522, which 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 (133001461) 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, 189381 + ... + 190081.

It is an arithmetic number, because the mean of its divisors is an integer number (16727958).

Almost surely, 2^133001431 is an apocalyptic number.

133001431 is a deficient number, since it is larger than the sum of its proper divisors (822233).

133001431 is an equidigital number, since it uses as much as digits as its factorization.

133001431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1601.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 133001431 is about 11532.6246362222. The cubic root of 133001431 is about 510.4487028940.

Adding to 133001431 its reverse (134100331), we get a palindrome (267101762).

The spelling of 133001431 in words is "one hundred thirty-three million, one thousand, four hundred thirty-one".