133231707 has 24 divisors (see below), whose sum is σ = 227036160. Its totient is φ = 73675440.

The previous prime is 133231697. The next prime is 133231723. The reversal of 133231707 is 707132331.

It is not a de Polignac number, because 133231707 - 2¹⁶ = 133166171 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133231727) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 32157 + ... + 36062.

It is an arithmetic number, because the mean of its divisors is an integer number (9459840).

Almost surely, 2^133231707 is an apocalyptic number.

133231707 is a deficient number, since it is larger than the sum of its proper divisors (93804453).

133231707 is a wasteful number, since it uses less digits than its factorization.

133231707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68263 (or 68260 counting only the distinct ones).

The product of its (nonzero) digits is 2646, while the sum is 27.

The square root of 133231707 is about 11542.6039956329. The cubic root of 133231707 is about 510.7431265755.

The spelling of 133231707 in words is "one hundred thirty-three million, two hundred thirty-one thousand, seven hundred seven".