155231332 has 12 divisors (see below), whose sum is σ = 273729456. Its totient is φ = 77022920.

The previous prime is 155231327. The next prime is 155231407. The reversal of 155231332 is 233132551.

It is a junction number, because it is equal to n+sod(n) for n = 155231297 and 155231306.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 147598 + ... + 148645.

It is an arithmetic number, because the mean of its divisors is an integer number (22810788).

Almost surely, 2^155231332 is an apocalyptic number.

It is an amenable number.

155231332 is a deficient number, since it is larger than the sum of its proper divisors (118498124).

155231332 is a wasteful number, since it uses less digits than its factorization.

155231332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296378 (or 296376 counting only the distinct ones).

The product of its digits is 2700, while the sum is 25.

The square root of 155231332 is about 12459.1866508212. The cubic root of 155231332 is about 537.4356376512.

Adding to 155231332 its reverse (233132551), we get a palindrome (388363883).

The spelling of 155231332 in words is "one hundred fifty-five million, two hundred thirty-one thousand, three hundred thirty-two".