133231210031 has 4 divisors (see below), whose sum is σ = 140243379000. Its totient is φ = 126219041064.

The previous prime is 133231210001. The next prime is 133231210067. The reversal of 133231210031 is 130012132331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130012132331 = 124213 ⋅1046687.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133231210031 is a prime.

It is a super-2 number, since 2×133231210031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133231209985 and 133231210012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133231210001) 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, 3506084456 + ... + 3506084493.

It is an arithmetic number, because the mean of its divisors is an integer number (35060844750).

Almost surely, 2^133231210031 is an apocalyptic number.

133231210031 is a deficient number, since it is larger than the sum of its proper divisors (7012168969).

133231210031 is an equidigital number, since it uses as much as digits as its factorization.

133231210031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7012168968.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 133231210031 its reverse (130012132331), we get a palindrome (263243342362).

The spelling of 133231210031 in words is "one hundred thirty-three billion, two hundred thirty-one million, two hundred ten thousand, thirty-one".