133862531 has 4 divisors (see below), whose sum is σ = 146031864. Its totient is φ = 121693200.

The previous prime is 133862503. The next prime is 133862551. The reversal of 133862531 is 135268331.

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 133862531 - 2¹⁸ = 133600387 is a prime.

It is a super-2 number, since 2×133862531² = 35838354411451922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (133862501) 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, 6084650 + ... + 6084671.

It is an arithmetic number, because the mean of its divisors is an integer number (36507966).

Almost surely, 2^133862531 is an apocalyptic number.

133862531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

133862531 is a deficient number, since it is larger than the sum of its proper divisors (12169333).

133862531 is a wasteful number, since it uses less digits than its factorization.

133862531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12169332.

The product of its digits is 12960, while the sum is 32.

The square root of 133862531 is about 11569.8976227104. The cubic root of 133862531 is about 511.5479446469.

The spelling of 133862531 in words is "one hundred thirty-three million, eight hundred sixty-two thousand, five hundred thirty-one".