133961031397 has 4 divisors (see below), whose sum is σ = 134053356096. Its totient is φ = 133868706700.

The previous prime is 133961031371. The next prime is 133961031401. The reversal of 133961031397 is 793130169331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133961031397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133961031367) 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, 46160173 + ... + 46163074.

It is an arithmetic number, because the mean of its divisors is an integer number (33513339024).

Almost surely, 2^133961031397 is an apocalyptic number.

It is an amenable number.

133961031397 is a deficient number, since it is larger than the sum of its proper divisors (92324699).

133961031397 is an equidigital number, since it uses as much as digits as its factorization.

133961031397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92324698.

The product of its (nonzero) digits is 275562, while the sum is 46.

The spelling of 133961031397 in words is "one hundred thirty-three billion, nine hundred sixty-one million, thirty-one thousand, three hundred ninety-seven".