133531030 has 8 divisors (see below), whose sum is σ = 240355872. Its totient is φ = 53412408.

The previous prime is 133531019. The next prime is 133531033. The reversal of 133531030 is 30135331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 133530989 and 133531007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133531033) 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, 6676542 + ... + 6676561.

It is an arithmetic number, because the mean of its divisors is an integer number (30044484).

Almost surely, 2^133531030 is an apocalyptic number.

133531030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133531030 is a deficient number, since it is larger than the sum of its proper divisors (106824842).

133531030 is a wasteful number, since it uses less digits than its factorization.

133531030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13353110.

The product of its (nonzero) digits is 405, while the sum is 19.

The square root of 133531030 is about 11555.5627296986. The cubic root of 133531030 is about 511.1253249390.

Adding to 133531030 its reverse (30135331), we get a palindrome (163666361).

The spelling of 133531030 in words is "one hundred thirty-three million, five hundred thirty-one thousand, thirty".