231330133012 has 12 divisors (see below), whose sum is σ = 441630254016. Its totient is φ = 105150060440.

The previous prime is 231330132997. The next prime is 231330133061. The reversal of 231330133012 is 210331033132.

231330133012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×231330133012² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2628751468 + ... + 2628751555.

It is an arithmetic number, because the mean of its divisors is an integer number (36802521168).

Almost surely, 2^231330133012 is an apocalyptic number.

231330133012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

231330133012 is a deficient number, since it is larger than the sum of its proper divisors (210300121004).

231330133012 is a wasteful number, since it uses less digits than its factorization.

231330133012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5257503038 (or 5257503036 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 231330133012 its reverse (210331033132), we get a palindrome (441661166144).

The spelling of 231330133012 in words is "two hundred thirty-one billion, three hundred thirty million, one hundred thirty-three thousand, twelve".